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/vmt-chc-benchmarks/lustre/metros_1_e7_1255_e7_12.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 19:04:37,712 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 19:04:37,714 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 19:04:37,732 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 19:04:37,732 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 19:04:37,733 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 19:04:37,736 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 19:04:37,738 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 19:04:37,740 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 19:04:37,742 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 19:04:37,746 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 19:04:37,746 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 19:04:37,747 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 19:04:37,749 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 19:04:37,752 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 19:04:37,753 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 19:04:37,767 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 19:04:37,770 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 19:04:37,771 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 19:04:37,772 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 19:04:37,773 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 19:04:37,776 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 19:04:37,776 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 19:04:37,777 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 19:04:37,781 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 19:04:37,783 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 19:04:37,784 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 19:04:37,784 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 19:04:37,786 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 19:04:37,787 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 19:04:37,787 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 19:04:37,788 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 19:04:37,789 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 19:04:37,794 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 19:04:37,795 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 19:04:37,795 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 19:04:37,813 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 19:04:37,814 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 19:04:37,814 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 19:04:37,814 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 19:04:37,815 INFO L131 SettingsManager]: Preferences of ChcToBoogie differ from their defaults: [2018-06-22 19:04:37,816 INFO L133 SettingsManager]: * Use one large procedure with gotos to replace tail recursive calls=false [2018-06-22 19:04:37,816 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 19:04:37,816 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 19:04:37,816 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 19:04:37,820 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 19:04:37,820 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 19:04:37,821 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 19:04:37,821 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 19:04:37,821 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 19:04:37,821 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 19:04:37,821 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 19:04:37,821 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 19:04:37,822 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 19:04:37,822 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 19:04:37,824 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 19:04:37,825 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 19:04:37,888 INFO ]: Repository-Root is: /tmp [2018-06-22 19:04:37,913 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 19:04:37,917 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 19:04:37,918 INFO ]: Initializing SmtParser... [2018-06-22 19:04:37,918 INFO ]: SmtParser initialized [2018-06-22 19:04:37,919 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/lustre/metros_1_e7_1255_e7_12.smt2 [2018-06-22 19:04:37,920 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 19:04:38,012 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/metros_1_e7_1255_e7_12.smt2 unknown [2018-06-22 19:04:38,492 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/metros_1_e7_1255_e7_12.smt2 [2018-06-22 19:04:38,497 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 19:04:38,514 INFO ]: Walking toolchain with 4 elements. [2018-06-22 19:04:38,515 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 19:04:38,515 INFO ]: Initializing ChcToBoogie... [2018-06-22 19:04:38,515 INFO ]: ChcToBoogie initialized [2018-06-22 19:04:38,522 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 07:04:38" (1/1) ... [2018-06-22 19:04:38,619 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:04:38 Unit [2018-06-22 19:04:38,619 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 19:04:38,620 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 19:04:38,620 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 19:04:38,620 INFO ]: Boogie Preprocessor initialized [2018-06-22 19:04:38,642 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:04:38" (1/1) ... [2018-06-22 19:04:38,642 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:04:38" (1/1) ... [2018-06-22 19:04:38,654 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:04:38" (1/1) ... [2018-06-22 19:04:38,655 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:04:38" (1/1) ... [2018-06-22 19:04:38,661 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:04:38" (1/1) ... [2018-06-22 19:04:38,667 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:04:38" (1/1) ... [2018-06-22 19:04:38,670 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:04:38" (1/1) ... [2018-06-22 19:04:38,674 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 19:04:38,675 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 19:04:38,675 INFO ]: Initializing RCFGBuilder... [2018-06-22 19:04:38,675 INFO ]: RCFGBuilder initialized [2018-06-22 19:04:38,678 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:04:38" (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 19:04:38,698 INFO ]: Specification and implementation of procedure False given in one single declaration [2018-06-22 19:04:38,698 INFO ]: Found specification of procedure False [2018-06-22 19:04:38,698 INFO ]: Found implementation of procedure False [2018-06-22 19:04:38,698 INFO ]: Specification and implementation of procedure state given in one single declaration [2018-06-22 19:04:38,698 INFO ]: Found specification of procedure state [2018-06-22 19:04:38,698 INFO ]: Found implementation of procedure state [2018-06-22 19:04:38,698 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 19:04:38,698 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 19:04:38,698 INFO ]: Found implementation of procedure Ultimate.START [2018-06-22 19:04:39,051 INFO ]: Using library mode [2018-06-22 19:04:39,051 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 07:04:39 BoogieIcfgContainer [2018-06-22 19:04:39,051 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 19:04:39,053 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 19:04:39,053 INFO ]: Initializing TraceAbstraction... [2018-06-22 19:04:39,056 INFO ]: TraceAbstraction initialized [2018-06-22 19:04:39,056 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 07:04:38" (1/3) ... [2018-06-22 19:04:39,057 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@321eae14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 07:04:39, skipping insertion in model container [2018-06-22 19:04:39,057 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:04:38" (2/3) ... [2018-06-22 19:04:39,057 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@321eae14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 07:04:39, skipping insertion in model container [2018-06-22 19:04:39,057 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 07:04:39" (3/3) ... [2018-06-22 19:04:39,059 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 19:04:39,068 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 19:04:39,077 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 19:04:39,130 INFO ]: Using default assertion order modulation [2018-06-22 19:04:39,130 INFO ]: Interprodecural is true [2018-06-22 19:04:39,130 INFO ]: Hoare is false [2018-06-22 19:04:39,130 INFO ]: Compute interpolants for FPandBP [2018-06-22 19:04:39,130 INFO ]: Backedges is TWOTRACK [2018-06-22 19:04:39,130 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 19:04:39,131 INFO ]: Difference is false [2018-06-22 19:04:39,131 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 19:04:39,131 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 19:04:39,148 INFO ]: Start isEmpty. Operand 13 states. [2018-06-22 19:04:39,162 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 19:04:39,162 INFO ]: Found error trace [2018-06-22 19:04:39,163 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 19:04:39,163 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 19:04:39,169 INFO ]: Analyzing trace with hash -597537630, now seen corresponding path program 1 times [2018-06-22 19:04:39,171 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 19:04:39,171 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 19:04:39,222 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:04:39,222 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 19:04:39,222 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:04:39,342 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:04:39,525 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 19:04:39,532 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 19:04:39,533 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 19:04:39,534 INFO ]: Interpolant automaton has 4 states [2018-06-22 19:04:39,550 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 19:04:39,550 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 19:04:39,552 INFO ]: Start difference. First operand 13 states. Second operand 4 states. [2018-06-22 19:04:39,675 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 19:04:39,675 INFO ]: Finished difference Result 13 states and 14 transitions. [2018-06-22 19:04:39,676 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 19:04:39,677 INFO ]: Start accepts. Automaton has 4 states. Word has length 9 [2018-06-22 19:04:39,678 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 19:04:39,688 INFO ]: With dead ends: 13 [2018-06-22 19:04:39,689 INFO ]: Without dead ends: 13 [2018-06-22 19:04:39,690 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 19:04:39,703 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-22 19:04:39,736 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-22 19:04:39,738 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-22 19:04:39,738 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2018-06-22 19:04:39,739 INFO ]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 9 [2018-06-22 19:04:39,739 INFO ]: Finished accepts. word is rejected. [2018-06-22 19:04:39,739 INFO ]: Abstraction has 13 states and 14 transitions. [2018-06-22 19:04:39,740 INFO ]: Interpolant automaton has 4 states. [2018-06-22 19:04:39,740 INFO ]: Start isEmpty. Operand 13 states and 14 transitions. [2018-06-22 19:04:39,741 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-22 19:04:39,741 INFO ]: Found error trace [2018-06-22 19:04:39,741 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 19:04:39,741 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 19:04:39,741 INFO ]: Analyzing trace with hash 1530833734, now seen corresponding path program 1 times [2018-06-22 19:04:39,741 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 19:04:39,741 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 19:04:39,742 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:04:39,742 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 19:04:39,742 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:04:39,797 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:04:40,123 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 19:04:40,188 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 19:04:40,188 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) [2018-06-22 19:04:40,212 INFO ]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 19:04:40,392 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:04:40,404 INFO ]: Computing forward predicates... [2018-06-22 19:04:40,922 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 19:04:40,948 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 19:04:40,948 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2018-06-22 19:04:40,949 INFO ]: Interpolant automaton has 8 states [2018-06-22 19:04:40,949 INFO ]: Constructing interpolant automaton starting with 8 interpolants. [2018-06-22 19:04:40,949 INFO ]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-06-22 19:04:40,950 INFO ]: Start difference. First operand 13 states and 14 transitions. Second operand 8 states. [2018-06-22 19:04:41,522 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 19:04:41,522 INFO ]: Finished difference Result 15 states and 16 transitions. [2018-06-22 19:04:41,523 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-22 19:04:41,523 INFO ]: Start accepts. Automaton has 8 states. Word has length 13 [2018-06-22 19:04:41,524 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 19:04:41,524 INFO ]: With dead ends: 15 [2018-06-22 19:04:41,524 INFO ]: Without dead ends: 15 [2018-06-22 19:04:41,525 INFO ]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2018-06-22 19:04:41,525 INFO ]: Start minimizeSevpa. Operand 15 states. [2018-06-22 19:04:41,532 INFO ]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-06-22 19:04:41,532 INFO ]: Start removeUnreachable. Operand 15 states. [2018-06-22 19:04:41,532 INFO ]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2018-06-22 19:04:41,533 INFO ]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 13 [2018-06-22 19:04:41,533 INFO ]: Finished accepts. word is rejected. [2018-06-22 19:04:41,533 INFO ]: Abstraction has 15 states and 16 transitions. [2018-06-22 19:04:41,533 INFO ]: Interpolant automaton has 8 states. [2018-06-22 19:04:41,533 INFO ]: Start isEmpty. Operand 15 states and 16 transitions. [2018-06-22 19:04:41,533 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-22 19:04:41,533 INFO ]: Found error trace [2018-06-22 19:04:41,533 INFO ]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 19:04:41,534 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 19:04:41,534 INFO ]: Analyzing trace with hash -1486246934, now seen corresponding path program 2 times [2018-06-22 19:04:41,534 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 19:04:41,534 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 19:04:41,535 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:04:41,536 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 19:04:41,536 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:04:41,692 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:04:42,240 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 19:04:42,241 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 19:04:42,241 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 19:04:42,265 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 19:04:42,399 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 19:04:42,399 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:04:42,405 INFO ]: Computing forward predicates... [2018-06-22 19:04:42,850 WARN ]: Spent 194.00 ms on a formula simplification. DAG size of input: 5 DAG size of output: 4 [2018-06-22 19:04:43,076 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 19:04:43,096 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 19:04:43,096 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2018-06-22 19:04:43,096 INFO ]: Interpolant automaton has 12 states [2018-06-22 19:04:43,097 INFO ]: Constructing interpolant automaton starting with 12 interpolants. [2018-06-22 19:04:43,097 INFO ]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2018-06-22 19:04:43,097 INFO ]: Start difference. First operand 15 states and 16 transitions. Second operand 12 states. [2018-06-22 19:04:43,403 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 19:04:43,403 INFO ]: Finished difference Result 17 states and 18 transitions. [2018-06-22 19:04:43,404 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-22 19:04:43,404 INFO ]: Start accepts. Automaton has 12 states. Word has length 17 [2018-06-22 19:04:43,404 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 19:04:43,404 INFO ]: With dead ends: 17 [2018-06-22 19:04:43,405 INFO ]: Without dead ends: 17 [2018-06-22 19:04:43,405 INFO ]: 0 DeclaredPredicates, 28 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2018-06-22 19:04:43,405 INFO ]: Start minimizeSevpa. Operand 17 states. [2018-06-22 19:04:43,408 INFO ]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-06-22 19:04:43,408 INFO ]: Start removeUnreachable. Operand 17 states. [2018-06-22 19:04:43,409 INFO ]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2018-06-22 19:04:43,409 INFO ]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 17 [2018-06-22 19:04:43,409 INFO ]: Finished accepts. word is rejected. [2018-06-22 19:04:43,409 INFO ]: Abstraction has 17 states and 18 transitions. [2018-06-22 19:04:43,409 INFO ]: Interpolant automaton has 12 states. [2018-06-22 19:04:43,409 INFO ]: Start isEmpty. Operand 17 states and 18 transitions. [2018-06-22 19:04:43,409 INFO ]: Finished isEmpty. Found accepting run of length 22 [2018-06-22 19:04:43,409 INFO ]: Found error trace [2018-06-22 19:04:43,410 INFO ]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 19:04:43,410 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 19:04:43,410 INFO ]: Analyzing trace with hash -2056434034, now seen corresponding path program 3 times [2018-06-22 19:04:43,410 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 19:04:43,410 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 19:04:43,411 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:04:43,411 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 19:04:43,411 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:04:43,544 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:04:44,044 WARN ]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-06-22 19:04:45,179 WARN ]: Spent 1.05 s on a formula simplification. DAG size of input: 69 DAG size of output: 56 [2018-06-22 19:04:45,376 INFO ]: Checked inductivity of 21 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-06-22 19:04:45,376 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 19:04:45,376 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 19:04:45,393 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-22 19:04:45,566 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-06-22 19:04:45,566 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:04:45,573 INFO ]: Computing forward predicates... [2018-06-22 19:04:45,752 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 19:04:45,778 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 19:04:45,821 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 19:04:46,578 WARN ]: Spent 273.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 30 [2018-06-22 19:04:46,683 INFO ]: Checked inductivity of 21 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-06-22 19:04:46,716 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 19:04:46,716 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2018-06-22 19:04:46,716 INFO ]: Interpolant automaton has 17 states [2018-06-22 19:04:46,716 INFO ]: Constructing interpolant automaton starting with 17 interpolants. [2018-06-22 19:04:46,716 INFO ]: CoverageRelationStatistics Valid=36, Invalid=236, Unknown=0, NotChecked=0, Total=272 [2018-06-22 19:04:46,717 INFO ]: Start difference. First operand 17 states and 18 transitions. Second operand 17 states. [2018-06-22 19:04:47,231 WARN ]: Spent 404.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 105 [2018-06-22 19:04:47,630 WARN ]: Spent 288.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 60 [2018-06-22 19:04:48,007 WARN ]: Spent 328.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 73 [2018-06-22 19:04:48,381 WARN ]: Spent 339.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 104 [2018-06-22 19:04:48,433 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 19:04:48,433 INFO ]: Finished difference Result 19 states and 20 transitions. [2018-06-22 19:04:48,434 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-06-22 19:04:48,434 INFO ]: Start accepts. Automaton has 17 states. Word has length 21 [2018-06-22 19:04:48,434 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 19:04:48,434 INFO ]: With dead ends: 19 [2018-06-22 19:04:48,434 INFO ]: Without dead ends: 19 [2018-06-22 19:04:48,435 INFO ]: 0 DeclaredPredicates, 35 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=96, Invalid=366, Unknown=0, NotChecked=0, Total=462 [2018-06-22 19:04:48,435 INFO ]: Start minimizeSevpa. Operand 19 states. [2018-06-22 19:04:48,437 INFO ]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-06-22 19:04:48,437 INFO ]: Start removeUnreachable. Operand 19 states. [2018-06-22 19:04:48,438 INFO ]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2018-06-22 19:04:48,438 INFO ]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 21 [2018-06-22 19:04:48,438 INFO ]: Finished accepts. word is rejected. [2018-06-22 19:04:48,438 INFO ]: Abstraction has 19 states and 20 transitions. [2018-06-22 19:04:48,438 INFO ]: Interpolant automaton has 17 states. [2018-06-22 19:04:48,438 INFO ]: Start isEmpty. Operand 19 states and 20 transitions. [2018-06-22 19:04:48,439 INFO ]: Finished isEmpty. Found accepting run of length 26 [2018-06-22 19:04:48,439 INFO ]: Found error trace [2018-06-22 19:04:48,439 INFO ]: trace histogram [5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 19:04:48,439 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 19:04:48,439 INFO ]: Analyzing trace with hash -434924750, now seen corresponding path program 4 times [2018-06-22 19:04:48,439 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 19:04:48,439 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 19:04:48,440 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:04:48,440 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 19:04:48,440 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:04:48,586 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:04:49,060 WARN ]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-06-22 19:04:49,773 WARN ]: Spent 632.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 49 [2018-06-22 19:04:49,905 INFO ]: Checked inductivity of 36 backedges. 12 proven. 12 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-06-22 19:04:49,905 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 19:04:49,905 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 19:04:49,914 INFO ]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-06-22 19:04:50,070 INFO ]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-06-22 19:04:50,070 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:04:50,079 INFO ]: Computing forward predicates... [2018-06-22 19:04:51,124 WARN ]: Spent 701.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 61 [2018-06-22 19:04:51,981 WARN ]: Spent 694.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 58 [2018-06-22 19:04:56,333 WARN ]: Spent 2.11 s on a formula simplification. DAG size of input: 253 DAG size of output: 52 [2018-06-22 19:04:56,549 INFO ]: Checked inductivity of 36 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-06-22 19:04:56,578 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 19:04:56,578 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 12] total 17 [2018-06-22 19:04:56,578 INFO ]: Interpolant automaton has 17 states [2018-06-22 19:04:56,578 INFO ]: Constructing interpolant automaton starting with 17 interpolants. [2018-06-22 19:04:56,578 INFO ]: CoverageRelationStatistics Valid=34, Invalid=238, Unknown=0, NotChecked=0, Total=272 [2018-06-22 19:04:56,578 INFO ]: Start difference. First operand 19 states and 20 transitions. Second operand 17 states. [2018-06-22 19:04:57,510 WARN ]: Spent 880.00 ms on a formula simplification. DAG size of input: 163 DAG size of output: 125 [2018-06-22 19:04:57,669 WARN ]: Spent 134.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 21 [2018-06-22 19:04:58,550 WARN ]: Spent 825.00 ms on a formula simplification. DAG size of input: 221 DAG size of output: 123 [2018-06-22 19:04:59,963 WARN ]: Spent 1.37 s on a formula simplification. DAG size of input: 208 DAG size of output: 144 [2018-06-22 19:05:01,463 WARN ]: Spent 1.44 s on a formula simplification. DAG size of input: 172 DAG size of output: 132 [2018-06-22 19:05:02,922 WARN ]: Spent 1.39 s on a formula simplification. DAG size of input: 172 DAG size of output: 137 [2018-06-22 19:05:02,938 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 19:05:02,938 INFO ]: Finished difference Result 15 states and 16 transitions. [2018-06-22 19:05:02,939 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-06-22 19:05:02,939 INFO ]: Start accepts. Automaton has 17 states. Word has length 25 [2018-06-22 19:05:02,939 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 19:05:02,939 INFO ]: With dead ends: 15 [2018-06-22 19:05:02,939 INFO ]: Without dead ends: 0 [2018-06-22 19:05:02,939 INFO ]: 0 DeclaredPredicates, 38 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 11.4s TimeCoverageRelationStatistics Valid=112, Invalid=394, Unknown=0, NotChecked=0, Total=506 [2018-06-22 19:05:02,939 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-22 19:05:02,939 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-22 19:05:02,939 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-22 19:05:02,939 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-22 19:05:02,939 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 25 [2018-06-22 19:05:02,939 INFO ]: Finished accepts. word is rejected. [2018-06-22 19:05:02,939 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-22 19:05:02,939 INFO ]: Interpolant automaton has 17 states. [2018-06-22 19:05:02,939 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-22 19:05:02,939 INFO ]: Finished isEmpty. No accepting run. [2018-06-22 19:05:02,943 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 07:05:02 BoogieIcfgContainer [2018-06-22 19:05:02,943 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 19:05:02,944 INFO ]: Toolchain (without parser) took 24446.49 ms. Allocated memory was 299.9 MB in the beginning and 623.4 MB in the end (delta: 323.5 MB). Free memory was 240.5 MB in the beginning and 378.0 MB in the end (delta: -137.5 MB). Peak memory consumption was 186.0 MB. Max. memory is 3.6 GB. [2018-06-22 19:05:02,945 INFO ]: SmtParser took 0.09 ms. Allocated memory is still 299.9 MB. Free memory is still 264.5 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 19:05:02,945 INFO ]: ChcToBoogie took 104.70 ms. Allocated memory is still 299.9 MB. Free memory was 240.5 MB in the beginning and 238.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 19:05:02,945 INFO ]: Boogie Preprocessor took 54.62 ms. Allocated memory is still 299.9 MB. Free memory was 238.5 MB in the beginning and 236.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 19:05:02,946 INFO ]: RCFGBuilder took 376.32 ms. Allocated memory is still 299.9 MB. Free memory was 236.5 MB in the beginning and 210.5 MB in the end (delta: 26.0 MB). Peak memory consumption was 26.0 MB. Max. memory is 3.6 GB. [2018-06-22 19:05:02,946 INFO ]: TraceAbstraction took 23890.06 ms. Allocated memory was 299.9 MB in the beginning and 623.4 MB in the end (delta: 323.5 MB). Free memory was 210.5 MB in the beginning and 378.0 MB in the end (delta: -167.5 MB). Peak memory consumption was 155.9 MB. Max. memory is 3.6 GB. [2018-06-22 19:05:02,948 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.09 ms. Allocated memory is still 299.9 MB. Free memory is still 264.5 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 104.70 ms. Allocated memory is still 299.9 MB. Free memory was 240.5 MB in the beginning and 238.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 54.62 ms. Allocated memory is still 299.9 MB. Free memory was 238.5 MB in the beginning and 236.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 376.32 ms. Allocated memory is still 299.9 MB. Free memory was 236.5 MB in the beginning and 210.5 MB in the end (delta: 26.0 MB). Peak memory consumption was 26.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 23890.06 ms. Allocated memory was 299.9 MB in the beginning and 623.4 MB in the end (delta: 323.5 MB). Free memory was 210.5 MB in the beginning and 378.0 MB in the end (delta: -167.5 MB). Peak memory consumption was 155.9 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 3 procedures, 13 locations, 1 error locations. SAFE Result, 23.8s OverallTime, 5 OverallIterations, 5 TraceHistogramMax, 9.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 53 SDtfs, 67 SDslu, 210 SDs, 0 SdLazy, 184 SolverSat, 87 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 125 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 17.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred 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, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 12.9s InterpolantComputationTime, 161 NumberOfCodeBlocks, 161 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 152 ConstructedInterpolants, 0 QuantifiedInterpolants, 75524 SizeOfPredicates, 103 NumberOfNonLiveVariables, 3136 ConjunctsInSsa, 160 ConjunctsInUnsatCore, 9 InterpolantComputations, 1 PerfectInterpolantSequences, 54/140 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/metros_1_e7_1255_e7_12.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_19-05-02-958.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/metros_1_e7_1255_e7_12.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_19-05-02-958.csv Received shutdown request...