java -Xss1g -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_No_Goto.epf -i /storage/chc-comp/eldarica-misc/LIA/llreve/barthe_merged_safe.c-1.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 10:57:45,071 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 10:57:45,074 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 10:57:45,085 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 10:57:45,086 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 10:57:45,087 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 10:57:45,090 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 10:57:45,092 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 10:57:45,093 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 10:57:45,095 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 10:57:45,096 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 10:57:45,096 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 10:57:45,097 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 10:57:45,097 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 10:57:45,101 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 10:57:45,101 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 10:57:45,103 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 10:57:45,113 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 10:57:45,114 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 10:57:45,115 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 10:57:45,116 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 10:57:45,120 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 10:57:45,121 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 10:57:45,121 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 10:57:45,122 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 10:57:45,122 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 10:57:45,125 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 10:57:45,126 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 10:57:45,127 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 10:57:45,127 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 10:57:45,128 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 10:57:45,129 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 10:57:45,133 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 10:57:45,134 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 10:57:45,135 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 10:57:45,135 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_No_Goto.epf [2018-06-22 10:57:45,163 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 10:57:45,163 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 10:57:45,164 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 10:57:45,164 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 10:57:45,165 INFO L131 SettingsManager]: Preferences of ChcToBoogie differ from their defaults: [2018-06-22 10:57:45,165 INFO L133 SettingsManager]: * Use one large procedure with gotos to replace tail recursive calls=false [2018-06-22 10:57:45,165 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 10:57:45,165 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 10:57:45,166 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 10:57:45,166 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 10:57:45,166 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 10:57:45,166 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 10:57:45,166 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 10:57:45,167 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 10:57:45,170 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 10:57:45,171 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 10:57:45,171 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 10:57:45,171 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 10:57:45,171 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 10:57:45,173 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 10:57:45,173 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 10:57:45,228 INFO ]: Repository-Root is: /tmp [2018-06-22 10:57:45,245 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 10:57:45,249 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 10:57:45,251 INFO ]: Initializing SmtParser... [2018-06-22 10:57:45,251 INFO ]: SmtParser initialized [2018-06-22 10:57:45,252 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/eldarica-misc/LIA/llreve/barthe_merged_safe.c-1.smt2 [2018-06-22 10:57:45,253 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 [2018-06-22 10:57:45,344 INFO ]: Executing SMT file /storage/chc-comp/eldarica-misc/LIA/llreve/barthe_merged_safe.c-1.smt2 unknown [2018-06-22 10:57:45,574 INFO ]: Succesfully executed SMT file /storage/chc-comp/eldarica-misc/LIA/llreve/barthe_merged_safe.c-1.smt2 [2018-06-22 10:57:45,579 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 10:57:45,585 INFO ]: Walking toolchain with 4 elements. [2018-06-22 10:57:45,585 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 10:57:45,585 INFO ]: Initializing ChcToBoogie... [2018-06-22 10:57:45,586 INFO ]: ChcToBoogie initialized [2018-06-22 10:57:45,589 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 10:57:45" (1/1) ... [2018-06-22 10:57:45,633 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 10:57:45 Unit [2018-06-22 10:57:45,633 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 10:57:45,634 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 10:57:45,634 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 10:57:45,634 INFO ]: Boogie Preprocessor initialized [2018-06-22 10:57:45,657 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 10:57:45" (1/1) ... [2018-06-22 10:57:45,657 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 10:57:45" (1/1) ... [2018-06-22 10:57:45,666 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 10:57:45" (1/1) ... [2018-06-22 10:57:45,666 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 10:57:45" (1/1) ... [2018-06-22 10:57:45,668 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 10:57:45" (1/1) ... [2018-06-22 10:57:45,670 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 10:57:45" (1/1) ... [2018-06-22 10:57:45,670 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 10:57:45" (1/1) ... [2018-06-22 10:57:45,672 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 10:57:45,672 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 10:57:45,672 INFO ]: Initializing RCFGBuilder... [2018-06-22 10:57:45,672 INFO ]: RCFGBuilder initialized [2018-06-22 10:57:45,673 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 10:57:45" (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) [2018-06-22 10:57:45,687 INFO ]: Specification and implementation of procedure False given in one single declaration [2018-06-22 10:57:45,687 INFO ]: Found specification of procedure False [2018-06-22 10:57:45,687 INFO ]: Found implementation of procedure False [2018-06-22 10:57:45,687 INFO ]: Specification and implementation of procedure inv_main13 given in one single declaration [2018-06-22 10:57:45,687 INFO ]: Found specification of procedure inv_main13 [2018-06-22 10:57:45,687 INFO ]: Found implementation of procedure inv_main13 [2018-06-22 10:57:45,687 INFO ]: Specification and implementation of procedure inv_main10 given in one single declaration [2018-06-22 10:57:45,687 INFO ]: Found specification of procedure inv_main10 [2018-06-22 10:57:45,687 INFO ]: Found implementation of procedure inv_main10 [2018-06-22 10:57:45,687 INFO ]: Specification and implementation of procedure inv_main6 given in one single declaration [2018-06-22 10:57:45,687 INFO ]: Found specification of procedure inv_main6 [2018-06-22 10:57:45,687 INFO ]: Found implementation of procedure inv_main6 [2018-06-22 10:57:45,687 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 10:57:45,687 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 10:57:45,688 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 [2018-06-22 10:57:46,013 INFO ]: Using library mode [2018-06-22 10:57:46,014 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 10:57:46 BoogieIcfgContainer [2018-06-22 10:57:46,014 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 10:57:46,015 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 10:57:46,015 INFO ]: Initializing TraceAbstraction... [2018-06-22 10:57:46,019 INFO ]: TraceAbstraction initialized [2018-06-22 10:57:46,019 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 10:57:45" (1/3) ... [2018-06-22 10:57:46,020 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d3c80f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 10:57:46, skipping insertion in model container [2018-06-22 10:57:46,020 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 10:57:45" (2/3) ... [2018-06-22 10:57:46,020 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d3c80f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 10:57:46, skipping insertion in model container [2018-06-22 10:57:46,020 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 10:57:46" (3/3) ... [2018-06-22 10:57:46,022 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 10:57:46,032 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 10:57:46,043 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 10:57:46,093 INFO ]: Using default assertion order modulation [2018-06-22 10:57:46,093 INFO ]: Interprodecural is true [2018-06-22 10:57:46,093 INFO ]: Hoare is false [2018-06-22 10:57:46,093 INFO ]: Compute interpolants for FPandBP [2018-06-22 10:57:46,093 INFO ]: Backedges is TWOTRACK [2018-06-22 10:57:46,093 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 10:57:46,093 INFO ]: Difference is false [2018-06-22 10:57:46,093 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 10:57:46,093 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 10:57:46,106 INFO ]: Start isEmpty. Operand 22 states. [2018-06-22 10:57:46,119 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-22 10:57:46,119 INFO ]: Found error trace [2018-06-22 10:57:46,120 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 10:57:46,120 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 10:57:46,124 INFO ]: Analyzing trace with hash 838305705, now seen corresponding path program 1 times [2018-06-22 10:57:46,126 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 10:57:46,126 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 10:57:46,162 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 10:57:46,162 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 10:57:46,162 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 10:57:46,202 INFO ]: Conjunction of SSA is unsat [2018-06-22 10:57:46,401 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 10:57:46,403 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 10:57:46,403 INFO ]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-06-22 10:57:46,404 INFO ]: Interpolant automaton has 6 states [2018-06-22 10:57:46,414 INFO ]: Constructing interpolant automaton starting with 6 interpolants. [2018-06-22 10:57:46,414 INFO ]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-06-22 10:57:46,416 INFO ]: Start difference. First operand 22 states. Second operand 6 states. [2018-06-22 10:57:46,529 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 10:57:46,529 INFO ]: Finished difference Result 22 states and 25 transitions. [2018-06-22 10:57:46,529 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-22 10:57:46,530 INFO ]: Start accepts. Automaton has 6 states. Word has length 13 [2018-06-22 10:57:46,531 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 10:57:46,539 INFO ]: With dead ends: 22 [2018-06-22 10:57:46,539 INFO ]: Without dead ends: 22 [2018-06-22 10:57:46,541 INFO ]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-06-22 10:57:46,555 INFO ]: Start minimizeSevpa. Operand 22 states. [2018-06-22 10:57:46,578 INFO ]: Finished minimizeSevpa. Reduced states from 22 to 22. [2018-06-22 10:57:46,579 INFO ]: Start removeUnreachable. Operand 22 states. [2018-06-22 10:57:46,580 INFO ]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2018-06-22 10:57:46,582 INFO ]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 13 [2018-06-22 10:57:46,582 INFO ]: Finished accepts. word is rejected. [2018-06-22 10:57:46,582 INFO ]: Abstraction has 22 states and 25 transitions. [2018-06-22 10:57:46,582 INFO ]: Interpolant automaton has 6 states. [2018-06-22 10:57:46,582 INFO ]: Start isEmpty. Operand 22 states and 25 transitions. [2018-06-22 10:57:46,584 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-22 10:57:46,584 INFO ]: Found error trace [2018-06-22 10:57:46,584 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 10:57:46,584 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 10:57:46,584 INFO ]: Analyzing trace with hash 19610765, now seen corresponding path program 1 times [2018-06-22 10:57:46,584 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 10:57:46,584 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 10:57:46,585 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 10:57:46,585 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 10:57:46,585 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 10:57:46,616 INFO ]: Conjunction of SSA is unsat [2018-06-22 10:57:47,189 WARN ]: Spent 245.00 ms on a formula simplification. DAG size of input: 21 DAG size of output: 18 [2018-06-22 10:57:47,499 WARN ]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2018-06-22 10:57:47,518 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 10:57:47,518 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 10:57:47,518 INFO ]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-06-22 10:57:47,519 INFO ]: Interpolant automaton has 8 states [2018-06-22 10:57:47,519 INFO ]: Constructing interpolant automaton starting with 8 interpolants. [2018-06-22 10:57:47,520 INFO ]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2018-06-22 10:57:47,520 INFO ]: Start difference. First operand 22 states and 25 transitions. Second operand 8 states. [2018-06-22 10:57:47,721 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 10:57:47,721 INFO ]: Finished difference Result 24 states and 27 transitions. [2018-06-22 10:57:47,722 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-06-22 10:57:47,722 INFO ]: Start accepts. Automaton has 8 states. Word has length 17 [2018-06-22 10:57:47,722 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 10:57:47,723 INFO ]: With dead ends: 24 [2018-06-22 10:57:47,723 INFO ]: Without dead ends: 24 [2018-06-22 10:57:47,724 INFO ]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2018-06-22 10:57:47,724 INFO ]: Start minimizeSevpa. Operand 24 states. [2018-06-22 10:57:47,728 INFO ]: Finished minimizeSevpa. Reduced states from 24 to 24. [2018-06-22 10:57:47,728 INFO ]: Start removeUnreachable. Operand 24 states. [2018-06-22 10:57:47,729 INFO ]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2018-06-22 10:57:47,729 INFO ]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 17 [2018-06-22 10:57:47,729 INFO ]: Finished accepts. word is rejected. [2018-06-22 10:57:47,729 INFO ]: Abstraction has 24 states and 27 transitions. [2018-06-22 10:57:47,729 INFO ]: Interpolant automaton has 8 states. [2018-06-22 10:57:47,729 INFO ]: Start isEmpty. Operand 24 states and 27 transitions. [2018-06-22 10:57:47,730 INFO ]: Finished isEmpty. Found accepting run of length 22 [2018-06-22 10:57:47,730 INFO ]: Found error trace [2018-06-22 10:57:47,730 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 10:57:47,730 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 10:57:47,730 INFO ]: Analyzing trace with hash -2077892369, now seen corresponding path program 1 times [2018-06-22 10:57:47,730 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 10:57:47,730 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 10:57:47,731 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 10:57:47,731 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 10:57:47,731 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 10:57:47,749 INFO ]: Conjunction of SSA is unsat [2018-06-22 10:57:47,968 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 10:57:47,968 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 10:57:47,968 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 [2018-06-22 10:57:47,997 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 10:57:48,021 INFO ]: Conjunction of SSA is unsat [2018-06-22 10:57:48,029 INFO ]: Computing forward predicates... [2018-06-22 10:57:48,544 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 10:57:48,574 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 10:57:48,574 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2018-06-22 10:57:48,574 INFO ]: Interpolant automaton has 11 states [2018-06-22 10:57:48,574 INFO ]: Constructing interpolant automaton starting with 11 interpolants. [2018-06-22 10:57:48,574 INFO ]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2018-06-22 10:57:48,575 INFO ]: Start difference. First operand 24 states and 27 transitions. Second operand 11 states. [2018-06-22 10:57:48,734 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 10:57:48,734 INFO ]: Finished difference Result 26 states and 29 transitions. [2018-06-22 10:57:48,735 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-06-22 10:57:48,735 INFO ]: Start accepts. Automaton has 11 states. Word has length 21 [2018-06-22 10:57:48,735 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 10:57:48,736 INFO ]: With dead ends: 26 [2018-06-22 10:57:48,736 INFO ]: Without dead ends: 26 [2018-06-22 10:57:48,736 INFO ]: 0 DeclaredPredicates, 30 GetRequests, 17 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2018-06-22 10:57:48,736 INFO ]: Start minimizeSevpa. Operand 26 states. [2018-06-22 10:57:48,740 INFO ]: Finished minimizeSevpa. Reduced states from 26 to 26. [2018-06-22 10:57:48,741 INFO ]: Start removeUnreachable. Operand 26 states. [2018-06-22 10:57:48,742 INFO ]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2018-06-22 10:57:48,742 INFO ]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 21 [2018-06-22 10:57:48,742 INFO ]: Finished accepts. word is rejected. [2018-06-22 10:57:48,742 INFO ]: Abstraction has 26 states and 29 transitions. [2018-06-22 10:57:48,742 INFO ]: Interpolant automaton has 11 states. [2018-06-22 10:57:48,742 INFO ]: Start isEmpty. Operand 26 states and 29 transitions. [2018-06-22 10:57:48,744 INFO ]: Finished isEmpty. Found accepting run of length 26 [2018-06-22 10:57:48,744 INFO ]: Found error trace [2018-06-22 10:57:48,744 INFO ]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 10:57:48,744 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 10:57:48,744 INFO ]: Analyzing trace with hash -939466669, now seen corresponding path program 1 times [2018-06-22 10:57:48,744 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 10:57:48,744 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 10:57:48,745 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 10:57:48,745 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 10:57:48,745 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 10:57:48,775 INFO ]: Conjunction of SSA is unsat [2018-06-22 10:57:49,054 INFO ]: Checked inductivity of 7 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-06-22 10:57:49,054 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 10:57:49,054 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) [2018-06-22 10:57:49,070 INFO ]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 10:57:49,107 INFO ]: Conjunction of SSA is unsat [2018-06-22 10:57:49,111 INFO ]: Computing forward predicates... [2018-06-22 10:57:49,413 WARN ]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2018-06-22 10:57:49,654 INFO ]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 10:57:49,686 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 10:57:49,686 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 17 [2018-06-22 10:57:49,686 INFO ]: Interpolant automaton has 17 states [2018-06-22 10:57:49,686 INFO ]: Constructing interpolant automaton starting with 17 interpolants. [2018-06-22 10:57:49,687 INFO ]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2018-06-22 10:57:49,687 INFO ]: Start difference. First operand 26 states and 29 transitions. Second operand 17 states. [2018-06-22 10:57:50,051 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 10:57:50,051 INFO ]: Finished difference Result 28 states and 31 transitions. [2018-06-22 10:57:50,052 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-06-22 10:57:50,052 INFO ]: Start accepts. Automaton has 17 states. Word has length 25 [2018-06-22 10:57:50,052 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 10:57:50,052 INFO ]: With dead ends: 28 [2018-06-22 10:57:50,052 INFO ]: Without dead ends: 28 [2018-06-22 10:57:50,053 INFO ]: 0 DeclaredPredicates, 39 GetRequests, 18 SyntacticMatches, 3 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=64, Invalid=316, Unknown=0, NotChecked=0, Total=380 [2018-06-22 10:57:50,053 INFO ]: Start minimizeSevpa. Operand 28 states. [2018-06-22 10:57:50,057 INFO ]: Finished minimizeSevpa. Reduced states from 28 to 28. [2018-06-22 10:57:50,057 INFO ]: Start removeUnreachable. Operand 28 states. [2018-06-22 10:57:50,058 INFO ]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2018-06-22 10:57:50,058 INFO ]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 25 [2018-06-22 10:57:50,058 INFO ]: Finished accepts. word is rejected. [2018-06-22 10:57:50,058 INFO ]: Abstraction has 28 states and 31 transitions. [2018-06-22 10:57:50,058 INFO ]: Interpolant automaton has 17 states. [2018-06-22 10:57:50,058 INFO ]: Start isEmpty. Operand 28 states and 31 transitions. [2018-06-22 10:57:50,059 INFO ]: Finished isEmpty. Found accepting run of length 30 [2018-06-22 10:57:50,059 INFO ]: Found error trace [2018-06-22 10:57:50,059 INFO ]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 10:57:50,059 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 10:57:50,062 INFO ]: Analyzing trace with hash -1029792459, now seen corresponding path program 2 times [2018-06-22 10:57:50,062 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 10:57:50,062 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 10:57:50,063 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 10:57:50,063 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 10:57:50,063 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 10:57:50,079 INFO ]: Conjunction of SSA is unsat [2018-06-22 10:57:50,230 INFO ]: Checked inductivity of 14 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-06-22 10:57:50,230 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 10:57:50,230 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 [2018-06-22 10:57:50,236 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 10:57:50,258 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 10:57:50,258 INFO ]: Conjunction of SSA is unsat [2018-06-22 10:57:50,262 INFO ]: Computing forward predicates... [2018-06-22 10:57:50,415 INFO ]: Checked inductivity of 14 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-06-22 10:57:50,434 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 10:57:50,435 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 16 [2018-06-22 10:57:50,435 INFO ]: Interpolant automaton has 16 states [2018-06-22 10:57:50,435 INFO ]: Constructing interpolant automaton starting with 16 interpolants. [2018-06-22 10:57:50,435 INFO ]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2018-06-22 10:57:50,435 INFO ]: Start difference. First operand 28 states and 31 transitions. Second operand 16 states. [2018-06-22 10:57:50,626 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 10:57:50,626 INFO ]: Finished difference Result 28 states and 30 transitions. [2018-06-22 10:57:50,627 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-06-22 10:57:50,627 INFO ]: Start accepts. Automaton has 16 states. Word has length 29 [2018-06-22 10:57:50,627 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 10:57:50,628 INFO ]: With dead ends: 28 [2018-06-22 10:57:50,628 INFO ]: Without dead ends: 27 [2018-06-22 10:57:50,628 INFO ]: 0 DeclaredPredicates, 43 GetRequests, 23 SyntacticMatches, 3 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2018-06-22 10:57:50,628 INFO ]: Start minimizeSevpa. Operand 27 states. [2018-06-22 10:57:50,631 INFO ]: Finished minimizeSevpa. Reduced states from 27 to 27. [2018-06-22 10:57:50,631 INFO ]: Start removeUnreachable. Operand 27 states. [2018-06-22 10:57:50,632 INFO ]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2018-06-22 10:57:50,632 INFO ]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 29 [2018-06-22 10:57:50,632 INFO ]: Finished accepts. word is rejected. [2018-06-22 10:57:50,632 INFO ]: Abstraction has 27 states and 28 transitions. [2018-06-22 10:57:50,632 INFO ]: Interpolant automaton has 16 states. [2018-06-22 10:57:50,632 INFO ]: Start isEmpty. Operand 27 states and 28 transitions. [2018-06-22 10:57:50,633 INFO ]: Finished isEmpty. Found accepting run of length 34 [2018-06-22 10:57:50,633 INFO ]: Found error trace [2018-06-22 10:57:50,633 INFO ]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 10:57:50,633 INFO ]: === Iteration 6 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 10:57:50,633 INFO ]: Analyzing trace with hash -2091899111, now seen corresponding path program 2 times [2018-06-22 10:57:50,633 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 10:57:50,633 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 10:57:50,634 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 10:57:50,634 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 10:57:50,634 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 10:57:50,654 INFO ]: Conjunction of SSA is unsat [2018-06-22 10:57:50,943 INFO ]: Checked inductivity of 22 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-06-22 10:57:50,943 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 10:57:50,943 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 [2018-06-22 10:57:50,949 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 10:57:50,969 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 10:57:50,969 INFO ]: Conjunction of SSA is unsat [2018-06-22 10:57:50,973 INFO ]: Computing forward predicates... [2018-06-22 10:57:51,511 INFO ]: Checked inductivity of 22 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-06-22 10:57:51,541 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 10:57:51,541 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14] total 24 [2018-06-22 10:57:51,541 INFO ]: Interpolant automaton has 24 states [2018-06-22 10:57:51,541 INFO ]: Constructing interpolant automaton starting with 24 interpolants. [2018-06-22 10:57:51,542 INFO ]: CoverageRelationStatistics Valid=69, Invalid=483, Unknown=0, NotChecked=0, Total=552 [2018-06-22 10:57:51,542 INFO ]: Start difference. First operand 27 states and 28 transitions. Second operand 24 states. [2018-06-22 10:57:52,109 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 10:57:52,109 INFO ]: Finished difference Result 27 states and 28 transitions. [2018-06-22 10:57:52,139 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-06-22 10:57:52,139 INFO ]: Start accepts. Automaton has 24 states. Word has length 33 [2018-06-22 10:57:52,140 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 10:57:52,140 INFO ]: With dead ends: 27 [2018-06-22 10:57:52,140 INFO ]: Without dead ends: 0 [2018-06-22 10:57:52,140 INFO ]: 0 DeclaredPredicates, 55 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=132, Invalid=798, Unknown=0, NotChecked=0, Total=930 [2018-06-22 10:57:52,140 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-22 10:57:52,140 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-22 10:57:52,140 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-22 10:57:52,140 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-22 10:57:52,141 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 33 [2018-06-22 10:57:52,141 INFO ]: Finished accepts. word is rejected. [2018-06-22 10:57:52,141 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-22 10:57:52,141 INFO ]: Interpolant automaton has 24 states. [2018-06-22 10:57:52,141 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-22 10:57:52,141 INFO ]: Finished isEmpty. No accepting run. [2018-06-22 10:57:52,146 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 10:57:52 BoogieIcfgContainer [2018-06-22 10:57:52,146 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 10:57:52,147 INFO ]: Toolchain (without parser) took 6567.20 ms. Allocated memory was 305.7 MB in the beginning and 364.9 MB in the end (delta: 59.2 MB). Free memory was 262.1 MB in the beginning and 255.3 MB in the end (delta: 6.8 MB). Peak memory consumption was 66.0 MB. Max. memory is 3.6 GB. [2018-06-22 10:57:52,148 INFO ]: SmtParser took 0.07 ms. Allocated memory is still 305.7 MB. Free memory is still 271.2 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 10:57:52,148 INFO ]: ChcToBoogie took 47.98 ms. Allocated memory is still 305.7 MB. Free memory was 261.1 MB in the beginning and 260.1 MB in the end (delta: 996.4 kB). Peak memory consumption was 996.4 kB. Max. memory is 3.6 GB. [2018-06-22 10:57:52,149 INFO ]: Boogie Preprocessor took 38.00 ms. Allocated memory is still 305.7 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. [2018-06-22 10:57:52,149 INFO ]: RCFGBuilder took 342.13 ms. Allocated memory is still 305.7 MB. Free memory was 258.1 MB in the beginning and 250.1 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 3.6 GB. [2018-06-22 10:57:52,150 INFO ]: TraceAbstraction took 6130.63 ms. Allocated memory was 305.7 MB in the beginning and 364.9 MB in the end (delta: 59.2 MB). Free memory was 250.1 MB in the beginning and 255.3 MB in the end (delta: -5.2 MB). Peak memory consumption was 54.0 MB. Max. memory is 3.6 GB. [2018-06-22 10:57:52,154 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.07 ms. Allocated memory is still 305.7 MB. Free memory is still 271.2 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 47.98 ms. Allocated memory is still 305.7 MB. Free memory was 261.1 MB in the beginning and 260.1 MB in the end (delta: 996.4 kB). Peak memory consumption was 996.4 kB. Max. memory is 3.6 GB. * Boogie Preprocessor took 38.00 ms. Allocated memory is still 305.7 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 342.13 ms. Allocated memory is still 305.7 MB. Free memory was 258.1 MB in the beginning and 250.1 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 6130.63 ms. Allocated memory was 305.7 MB in the beginning and 364.9 MB in the end (delta: 59.2 MB). Free memory was 250.1 MB in the beginning and 255.3 MB in the end (delta: -5.2 MB). Peak memory consumption was 54.0 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 5 procedures, 22 locations, 1 error locations. SAFE Result, 6.0s OverallTime, 6 OverallIterations, 3 TraceHistogramMax, 1.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 117 SDtfs, 41 SDslu, 760 SDs, 0 SdLazy, 399 SolverSat, 29 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 181 GetRequests, 86 SyntacticMatches, 11 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 241 ImplicationChecksByTransitivity, 3.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred 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, 6 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 3.7s InterpolantComputationTime, 246 NumberOfCodeBlocks, 246 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 236 ConstructedInterpolants, 6 QuantifiedInterpolants, 57344 SizeOfPredicates, 37 NumberOfNonLiveVariables, 542 ConjunctsInSsa, 224 ConjunctsInUnsatCore, 10 InterpolantComputations, 2 PerfectInterpolantSequences, 39/92 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/barthe_merged_safe.c-1.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_10-57-52-164.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/barthe_merged_safe.c-1.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_10-57-52-164.csv Received shutdown request...