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/hopv/lia/mochi/max.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 11:34:52,557 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 11:34:52,560 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 11:34:52,573 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 11:34:52,573 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 11:34:52,574 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 11:34:52,575 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 11:34:52,579 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 11:34:52,580 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 11:34:52,582 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 11:34:52,583 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 11:34:52,583 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 11:34:52,584 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 11:34:52,585 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 11:34:52,585 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 11:34:52,589 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 11:34:52,590 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 11:34:52,599 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 11:34:52,601 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 11:34:52,601 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 11:34:52,602 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 11:34:52,608 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 11:34:52,608 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 11:34:52,608 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 11:34:52,609 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 11:34:52,610 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 11:34:52,610 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 11:34:52,613 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 11:34:52,613 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 11:34:52,614 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 11:34:52,614 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 11:34:52,615 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 11:34:52,615 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 11:34:52,616 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 11:34:52,619 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 11:34:52,619 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 11:34:52,639 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 11:34:52,639 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 11:34:52,639 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 11:34:52,639 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 11:34:52,640 INFO L131 SettingsManager]: Preferences of ChcToBoogie differ from their defaults: [2018-06-22 11:34:52,640 INFO L133 SettingsManager]: * Use one large procedure with gotos to replace tail recursive calls=false [2018-06-22 11:34:52,641 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 11:34:52,641 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 11:34:52,641 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 11:34:52,641 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 11:34:52,641 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 11:34:52,642 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 11:34:52,642 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 11:34:52,642 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 11:34:52,643 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 11:34:52,643 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 11:34:52,643 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 11:34:52,643 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 11:34:52,643 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 11:34:52,644 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 11:34:52,645 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 11:34:52,685 INFO ]: Repository-Root is: /tmp [2018-06-22 11:34:52,705 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 11:34:52,710 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 11:34:52,711 INFO ]: Initializing SmtParser... [2018-06-22 11:34:52,712 INFO ]: SmtParser initialized [2018-06-22 11:34:52,712 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/hopv/lia/mochi/max.smt2 [2018-06-22 11:34:52,713 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 11:34:52,803 INFO ]: Executing SMT file /storage/chc-comp/hopv/lia/mochi/max.smt2 unknown [2018-06-22 11:34:52,964 INFO ]: Succesfully executed SMT file /storage/chc-comp/hopv/lia/mochi/max.smt2 [2018-06-22 11:34:52,973 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 11:34:52,979 INFO ]: Walking toolchain with 4 elements. [2018-06-22 11:34:52,980 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 11:34:52,980 INFO ]: Initializing ChcToBoogie... [2018-06-22 11:34:52,980 INFO ]: ChcToBoogie initialized [2018-06-22 11:34:52,983 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 11:34:52" (1/1) ... [2018-06-22 11:34:53,027 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:34:53 Unit [2018-06-22 11:34:53,027 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 11:34:53,027 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 11:34:53,028 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 11:34:53,028 INFO ]: Boogie Preprocessor initialized [2018-06-22 11:34:53,051 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:34:53" (1/1) ... [2018-06-22 11:34:53,051 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:34:53" (1/1) ... [2018-06-22 11:34:53,057 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:34:53" (1/1) ... [2018-06-22 11:34:53,058 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:34:53" (1/1) ... [2018-06-22 11:34:53,061 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:34:53" (1/1) ... [2018-06-22 11:34:53,063 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:34:53" (1/1) ... [2018-06-22 11:34:53,064 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:34:53" (1/1) ... [2018-06-22 11:34:53,066 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 11:34:53,066 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 11:34:53,066 INFO ]: Initializing RCFGBuilder... [2018-06-22 11:34:53,066 INFO ]: RCFGBuilder initialized [2018-06-22 11:34:53,067 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:34:53" (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 [2018-06-22 11:34:53,077 INFO ]: Specification and implementation of procedure False given in one single declaration [2018-06-22 11:34:53,077 INFO ]: Found specification of procedure False [2018-06-22 11:34:53,078 INFO ]: Found implementation of procedure False [2018-06-22 11:34:53,078 INFO ]: Specification and implementation of procedure fDLRunknownCLN3 given in one single declaration [2018-06-22 11:34:53,078 INFO ]: Found specification of procedure fDLRunknownCLN3 [2018-06-22 11:34:53,078 INFO ]: Found implementation of procedure fDLRunknownCLN3 [2018-06-22 11:34:53,078 INFO ]: Specification and implementation of procedure maxDLRunknownCLN10 given in one single declaration [2018-06-22 11:34:53,078 INFO ]: Found specification of procedure maxDLRunknownCLN10 [2018-06-22 11:34:53,078 INFO ]: Found implementation of procedure maxDLRunknownCLN10 [2018-06-22 11:34:53,078 INFO ]: Specification and implementation of procedure maxDLRunknownCLN6 given in one single declaration [2018-06-22 11:34:53,078 INFO ]: Found specification of procedure maxDLRunknownCLN6 [2018-06-22 11:34:53,078 INFO ]: Found implementation of procedure maxDLRunknownCLN6 [2018-06-22 11:34:53,078 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 11:34:53,078 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 11:34:53,078 INFO ]: Found implementation of procedure Ultimate.START [2018-06-22 11:34:53,426 INFO ]: Using library mode [2018-06-22 11:34:53,432 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 11:34:53 BoogieIcfgContainer [2018-06-22 11:34:53,432 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 11:34:53,433 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 11:34:53,433 INFO ]: Initializing TraceAbstraction... [2018-06-22 11:34:53,436 INFO ]: TraceAbstraction initialized [2018-06-22 11:34:53,436 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 11:34:52" (1/3) ... [2018-06-22 11:34:53,437 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b54f89f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 11:34:53, skipping insertion in model container [2018-06-22 11:34:53,437 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:34:53" (2/3) ... [2018-06-22 11:34:53,437 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b54f89f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 11:34:53, skipping insertion in model container [2018-06-22 11:34:53,437 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 11:34:53" (3/3) ... [2018-06-22 11:34:53,439 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 11:34:53,448 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 11:34:53,462 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 11:34:53,508 INFO ]: Using default assertion order modulation [2018-06-22 11:34:53,509 INFO ]: Interprodecural is true [2018-06-22 11:34:53,509 INFO ]: Hoare is false [2018-06-22 11:34:53,509 INFO ]: Compute interpolants for FPandBP [2018-06-22 11:34:53,509 INFO ]: Backedges is TWOTRACK [2018-06-22 11:34:53,509 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 11:34:53,509 INFO ]: Difference is false [2018-06-22 11:34:53,509 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 11:34:53,509 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 11:34:53,523 INFO ]: Start isEmpty. Operand 22 states. [2018-06-22 11:34:53,533 INFO ]: Finished isEmpty. Found accepting run of length 6 [2018-06-22 11:34:53,533 INFO ]: Found error trace [2018-06-22 11:34:53,534 INFO ]: trace histogram [1, 1, 1, 1, 1] [2018-06-22 11:34:53,534 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:34:53,537 INFO ]: Analyzing trace with hash 95304614, now seen corresponding path program 1 times [2018-06-22 11:34:53,538 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:34:53,539 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:34:53,571 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:34:53,571 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:34:53,571 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:34:53,583 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:34:53,604 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 11:34:53,606 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 11:34:53,606 INFO ]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-06-22 11:34:53,607 INFO ]: Interpolant automaton has 2 states [2018-06-22 11:34:53,622 INFO ]: Constructing interpolant automaton starting with 2 interpolants. [2018-06-22 11:34:53,622 INFO ]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-06-22 11:34:53,625 INFO ]: Start difference. First operand 22 states. Second operand 2 states. [2018-06-22 11:34:53,650 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:34:53,650 INFO ]: Finished difference Result 20 states and 22 transitions. [2018-06-22 11:34:53,650 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-06-22 11:34:53,652 INFO ]: Start accepts. Automaton has 2 states. Word has length 5 [2018-06-22 11:34:53,652 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:34:53,662 INFO ]: With dead ends: 20 [2018-06-22 11:34:53,662 INFO ]: Without dead ends: 20 [2018-06-22 11:34:53,669 INFO ]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-06-22 11:34:53,686 INFO ]: Start minimizeSevpa. Operand 20 states. [2018-06-22 11:34:53,716 INFO ]: Finished minimizeSevpa. Reduced states from 20 to 20. [2018-06-22 11:34:53,717 INFO ]: Start removeUnreachable. Operand 20 states. [2018-06-22 11:34:53,718 INFO ]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2018-06-22 11:34:53,718 INFO ]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 5 [2018-06-22 11:34:53,719 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:34:53,719 INFO ]: Abstraction has 20 states and 22 transitions. [2018-06-22 11:34:53,719 INFO ]: Interpolant automaton has 2 states. [2018-06-22 11:34:53,719 INFO ]: Start isEmpty. Operand 20 states and 22 transitions. [2018-06-22 11:34:53,720 INFO ]: Finished isEmpty. Found accepting run of length 30 [2018-06-22 11:34:53,720 INFO ]: Found error trace [2018-06-22 11:34:53,720 INFO ]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:34:53,720 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:34:53,720 INFO ]: Analyzing trace with hash 1269245861, now seen corresponding path program 1 times [2018-06-22 11:34:53,721 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:34:53,721 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:34:53,721 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:34:53,721 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:34:53,721 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:34:53,756 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:34:53,831 INFO ]: Checked inductivity of 13 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-06-22 11:34:53,831 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 11:34:53,831 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 11:34:53,832 INFO ]: Interpolant automaton has 4 states [2018-06-22 11:34:53,833 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 11:34:53,833 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 11:34:53,833 INFO ]: Start difference. First operand 20 states and 22 transitions. Second operand 4 states. [2018-06-22 11:34:53,943 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:34:53,943 INFO ]: Finished difference Result 22 states and 24 transitions. [2018-06-22 11:34:53,945 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 11:34:53,945 INFO ]: Start accepts. Automaton has 4 states. Word has length 29 [2018-06-22 11:34:53,946 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:34:53,948 INFO ]: With dead ends: 22 [2018-06-22 11:34:53,948 INFO ]: Without dead ends: 22 [2018-06-22 11:34:53,948 INFO ]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 11:34:53,949 INFO ]: Start minimizeSevpa. Operand 22 states. [2018-06-22 11:34:53,955 INFO ]: Finished minimizeSevpa. Reduced states from 22 to 22. [2018-06-22 11:34:53,955 INFO ]: Start removeUnreachable. Operand 22 states. [2018-06-22 11:34:53,957 INFO ]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2018-06-22 11:34:53,957 INFO ]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 29 [2018-06-22 11:34:53,958 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:34:53,958 INFO ]: Abstraction has 22 states and 24 transitions. [2018-06-22 11:34:53,958 INFO ]: Interpolant automaton has 4 states. [2018-06-22 11:34:53,958 INFO ]: Start isEmpty. Operand 22 states and 24 transitions. [2018-06-22 11:34:53,958 INFO ]: Finished isEmpty. Found accepting run of length 30 [2018-06-22 11:34:53,958 INFO ]: Found error trace [2018-06-22 11:34:53,959 INFO ]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:34:53,959 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:34:53,959 INFO ]: Analyzing trace with hash 1326504163, now seen corresponding path program 1 times [2018-06-22 11:34:53,959 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:34:53,959 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:34:53,960 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:34:53,960 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:34:53,960 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:34:53,992 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:34:54,445 INFO ]: Checked inductivity of 13 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-06-22 11:34:54,445 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:34:54,445 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 11:34:54,453 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:34:54,504 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:34:54,514 INFO ]: Computing forward predicates... [2018-06-22 11:34:54,712 INFO ]: Checked inductivity of 13 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-06-22 11:34:54,735 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:34:54,735 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2018-06-22 11:34:54,735 INFO ]: Interpolant automaton has 11 states [2018-06-22 11:34:54,736 INFO ]: Constructing interpolant automaton starting with 11 interpolants. [2018-06-22 11:34:54,736 INFO ]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2018-06-22 11:34:54,736 INFO ]: Start difference. First operand 22 states and 24 transitions. Second operand 11 states. [2018-06-22 11:34:55,292 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:34:55,292 INFO ]: Finished difference Result 30 states and 35 transitions. [2018-06-22 11:34:55,293 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-06-22 11:34:55,293 INFO ]: Start accepts. Automaton has 11 states. Word has length 29 [2018-06-22 11:34:55,293 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:34:55,294 INFO ]: With dead ends: 30 [2018-06-22 11:34:55,294 INFO ]: Without dead ends: 27 [2018-06-22 11:34:55,295 INFO ]: 0 DeclaredPredicates, 41 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2018-06-22 11:34:55,295 INFO ]: Start minimizeSevpa. Operand 27 states. [2018-06-22 11:34:55,304 INFO ]: Finished minimizeSevpa. Reduced states from 27 to 25. [2018-06-22 11:34:55,304 INFO ]: Start removeUnreachable. Operand 25 states. [2018-06-22 11:34:55,305 INFO ]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2018-06-22 11:34:55,305 INFO ]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 29 [2018-06-22 11:34:55,305 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:34:55,305 INFO ]: Abstraction has 25 states and 29 transitions. [2018-06-22 11:34:55,305 INFO ]: Interpolant automaton has 11 states. [2018-06-22 11:34:55,305 INFO ]: Start isEmpty. Operand 25 states and 29 transitions. [2018-06-22 11:34:55,306 INFO ]: Finished isEmpty. Found accepting run of length 30 [2018-06-22 11:34:55,306 INFO ]: Found error trace [2018-06-22 11:34:55,307 INFO ]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:34:55,308 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:34:55,308 INFO ]: Analyzing trace with hash 315386913, now seen corresponding path program 2 times [2018-06-22 11:34:55,308 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:34:55,308 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:34:55,309 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:34:55,309 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:34:55,309 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:34:55,324 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:34:55,515 INFO ]: Checked inductivity of 13 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-06-22 11:34:55,515 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:34:55,515 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 [2018-06-22 11:34:55,530 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 11:34:55,567 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 11:34:55,567 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:34:55,571 INFO ]: Computing forward predicates... [2018-06-22 11:34:56,042 INFO ]: Checked inductivity of 13 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-06-22 11:34:56,064 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:34:56,064 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 15 [2018-06-22 11:34:56,064 INFO ]: Interpolant automaton has 15 states [2018-06-22 11:34:56,064 INFO ]: Constructing interpolant automaton starting with 15 interpolants. [2018-06-22 11:34:56,065 INFO ]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2018-06-22 11:34:56,065 INFO ]: Start difference. First operand 25 states and 29 transitions. Second operand 15 states. [2018-06-22 11:34:56,251 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:34:56,251 INFO ]: Finished difference Result 28 states and 32 transitions. [2018-06-22 11:34:56,252 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-06-22 11:34:56,252 INFO ]: Start accepts. Automaton has 15 states. Word has length 29 [2018-06-22 11:34:56,252 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:34:56,253 INFO ]: With dead ends: 28 [2018-06-22 11:34:56,253 INFO ]: Without dead ends: 24 [2018-06-22 11:34:56,253 INFO ]: 0 DeclaredPredicates, 42 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2018-06-22 11:34:56,253 INFO ]: Start minimizeSevpa. Operand 24 states. [2018-06-22 11:34:56,260 INFO ]: Finished minimizeSevpa. Reduced states from 24 to 24. [2018-06-22 11:34:56,260 INFO ]: Start removeUnreachable. Operand 24 states. [2018-06-22 11:34:56,261 INFO ]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions. [2018-06-22 11:34:56,261 INFO ]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 29 [2018-06-22 11:34:56,261 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:34:56,261 INFO ]: Abstraction has 24 states and 26 transitions. [2018-06-22 11:34:56,261 INFO ]: Interpolant automaton has 15 states. [2018-06-22 11:34:56,261 INFO ]: Start isEmpty. Operand 24 states and 26 transitions. [2018-06-22 11:34:56,261 INFO ]: Finished isEmpty. Found accepting run of length 30 [2018-06-22 11:34:56,261 INFO ]: Found error trace [2018-06-22 11:34:56,262 INFO ]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:34:56,262 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:34:56,262 INFO ]: Analyzing trace with hash 534241631, now seen corresponding path program 1 times [2018-06-22 11:34:56,262 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:34:56,262 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:34:56,263 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:34:56,263 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 11:34:56,263 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:34:56,271 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:34:56,402 INFO ]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2018-06-22 11:34:56,403 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 11:34:56,403 INFO ]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-06-22 11:34:56,403 INFO ]: Interpolant automaton has 9 states [2018-06-22 11:34:56,403 INFO ]: Constructing interpolant automaton starting with 9 interpolants. [2018-06-22 11:34:56,403 INFO ]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-06-22 11:34:56,403 INFO ]: Start difference. First operand 24 states and 26 transitions. Second operand 9 states. [2018-06-22 11:34:56,573 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:34:56,573 INFO ]: Finished difference Result 27 states and 29 transitions. [2018-06-22 11:34:56,573 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-06-22 11:34:56,573 INFO ]: Start accepts. Automaton has 9 states. Word has length 29 [2018-06-22 11:34:56,573 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:34:56,574 INFO ]: With dead ends: 27 [2018-06-22 11:34:56,574 INFO ]: Without dead ends: 24 [2018-06-22 11:34:56,574 INFO ]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2018-06-22 11:34:56,574 INFO ]: Start minimizeSevpa. Operand 24 states. [2018-06-22 11:34:56,577 INFO ]: Finished minimizeSevpa. Reduced states from 24 to 24. [2018-06-22 11:34:56,577 INFO ]: Start removeUnreachable. Operand 24 states. [2018-06-22 11:34:56,577 INFO ]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2018-06-22 11:34:56,578 INFO ]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 29 [2018-06-22 11:34:56,578 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:34:56,578 INFO ]: Abstraction has 24 states and 25 transitions. [2018-06-22 11:34:56,578 INFO ]: Interpolant automaton has 9 states. [2018-06-22 11:34:56,578 INFO ]: Start isEmpty. Operand 24 states and 25 transitions. [2018-06-22 11:34:56,578 INFO ]: Finished isEmpty. Found accepting run of length 30 [2018-06-22 11:34:56,579 INFO ]: Found error trace [2018-06-22 11:34:56,579 INFO ]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:34:56,579 INFO ]: === Iteration 6 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:34:56,579 INFO ]: Analyzing trace with hash 1545358881, now seen corresponding path program 3 times [2018-06-22 11:34:56,579 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:34:56,579 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:34:56,580 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:34:56,580 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:34:56,580 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:34:56,588 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:34:56,716 INFO ]: Checked inductivity of 13 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-06-22 11:34:56,716 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:34:56,716 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 11:34:56,722 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-22 11:34:56,737 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2018-06-22 11:34:56,737 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:34:56,740 INFO ]: Computing forward predicates... [2018-06-22 11:34:56,794 INFO ]: Checked inductivity of 13 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-06-22 11:34:56,826 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:34:56,826 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 14 [2018-06-22 11:34:56,827 INFO ]: Interpolant automaton has 14 states [2018-06-22 11:34:56,827 INFO ]: Constructing interpolant automaton starting with 14 interpolants. [2018-06-22 11:34:56,827 INFO ]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2018-06-22 11:34:56,827 INFO ]: Start difference. First operand 24 states and 25 transitions. Second operand 14 states. [2018-06-22 11:34:56,921 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:34:56,921 INFO ]: Finished difference Result 20 states and 21 transitions. [2018-06-22 11:34:56,922 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-06-22 11:34:56,922 INFO ]: Start accepts. Automaton has 14 states. Word has length 29 [2018-06-22 11:34:56,922 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:34:56,922 INFO ]: With dead ends: 20 [2018-06-22 11:34:56,922 INFO ]: Without dead ends: 0 [2018-06-22 11:34:56,923 INFO ]: 0 DeclaredPredicates, 42 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2018-06-22 11:34:56,923 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-22 11:34:56,923 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-22 11:34:56,923 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-22 11:34:56,923 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-22 11:34:56,923 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 29 [2018-06-22 11:34:56,923 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:34:56,923 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-22 11:34:56,923 INFO ]: Interpolant automaton has 14 states. [2018-06-22 11:34:56,923 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-22 11:34:56,923 INFO ]: Finished isEmpty. No accepting run. [2018-06-22 11:34:56,927 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 11:34:56 BoogieIcfgContainer [2018-06-22 11:34:56,927 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 11:34:56,928 INFO ]: Toolchain (without parser) took 3954.59 ms. Allocated memory was 305.1 MB in the beginning and 324.5 MB in the end (delta: 19.4 MB). Free memory was 261.5 MB in the beginning and 181.6 MB in the end (delta: 79.9 MB). Peak memory consumption was 99.3 MB. Max. memory is 3.6 GB. [2018-06-22 11:34:56,929 INFO ]: SmtParser took 0.06 ms. Allocated memory is still 305.1 MB. Free memory is still 269.6 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 11:34:56,930 INFO ]: ChcToBoogie took 47.67 ms. Allocated memory is still 305.1 MB. Free memory was 261.5 MB in the beginning and 259.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 11:34:56,930 INFO ]: Boogie Preprocessor took 38.12 ms. Allocated memory is still 305.1 MB. Free memory was 259.5 MB in the beginning and 257.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 11:34:56,931 INFO ]: RCFGBuilder took 365.84 ms. Allocated memory is still 305.1 MB. Free memory was 257.5 MB in the beginning and 249.6 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 3.6 GB. [2018-06-22 11:34:56,932 INFO ]: TraceAbstraction took 3494.21 ms. Allocated memory was 305.1 MB in the beginning and 324.5 MB in the end (delta: 19.4 MB). Free memory was 249.6 MB in the beginning and 181.6 MB in the end (delta: 67.9 MB). Peak memory consumption was 87.3 MB. Max. memory is 3.6 GB. [2018-06-22 11:34:56,937 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.06 ms. Allocated memory is still 305.1 MB. Free memory is still 269.6 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 47.67 ms. Allocated memory is still 305.1 MB. Free memory was 261.5 MB in the beginning and 259.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 38.12 ms. Allocated memory is still 305.1 MB. Free memory was 259.5 MB in the beginning and 257.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 365.84 ms. Allocated memory is still 305.1 MB. Free memory was 257.5 MB in the beginning and 249.6 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 3494.21 ms. Allocated memory was 305.1 MB in the beginning and 324.5 MB in the end (delta: 19.4 MB). Free memory was 249.6 MB in the beginning and 181.6 MB in the end (delta: 67.9 MB). Peak memory consumption was 87.3 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, 3.4s OverallTime, 6 OverallIterations, 3 TraceHistogramMax, 1.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 122 SDtfs, 15 SDslu, 523 SDs, 0 SdLazy, 277 SolverSat, 17 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 146 GetRequests, 91 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 1.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 237 NumberOfCodeBlocks, 237 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 228 ConstructedInterpolants, 0 QuantifiedInterpolants, 16480 SizeOfPredicates, 23 NumberOfNonLiveVariables, 271 ConjunctsInSsa, 63 ConjunctsInUnsatCore, 9 InterpolantComputations, 3 PerfectInterpolantSequences, 70/104 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/max.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_11-34-56-952.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/max.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_11-34-56-952.csv Received shutdown request...