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/llreve-bench/smt2/loop__upcount.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 11:59:55,155 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 11:59:55,157 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 11:59:55,171 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 11:59:55,172 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 11:59:55,172 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 11:59:55,176 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 11:59:55,178 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 11:59:55,179 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 11:59:55,181 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 11:59:55,181 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 11:59:55,182 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 11:59:55,182 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 11:59:55,183 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 11:59:55,187 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 11:59:55,187 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 11:59:55,189 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 11:59:55,202 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 11:59:55,203 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 11:59:55,204 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 11:59:55,205 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 11:59:55,207 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 11:59:55,207 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 11:59:55,207 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 11:59:55,208 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 11:59:55,208 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 11:59:55,214 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 11:59:55,214 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 11:59:55,215 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 11:59:55,215 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 11:59:55,216 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 11:59:55,217 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 11:59:55,217 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 11:59:55,217 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 11:59:55,221 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 11:59:55,221 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 11:59:55,242 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 11:59:55,243 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 11:59:55,243 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 11:59:55,243 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 11:59:55,244 INFO L131 SettingsManager]: Preferences of ChcToBoogie differ from their defaults: [2018-06-22 11:59:55,244 INFO L133 SettingsManager]: * Use one large procedure with gotos to replace tail recursive calls=false [2018-06-22 11:59:55,244 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 11:59:55,245 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 11:59:55,245 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 11:59:55,245 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 11:59:55,245 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 11:59:55,245 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 11:59:55,246 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 11:59:55,246 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 11:59:55,246 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 11:59:55,246 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 11:59:55,246 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 11:59:55,246 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 11:59:55,247 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 11:59:55,248 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 11:59:55,248 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 11:59:55,293 INFO ]: Repository-Root is: /tmp [2018-06-22 11:59:55,307 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 11:59:55,315 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 11:59:55,316 INFO ]: Initializing SmtParser... [2018-06-22 11:59:55,316 INFO ]: SmtParser initialized [2018-06-22 11:59:55,317 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/llreve-bench/smt2/loop__upcount.smt2 [2018-06-22 11:59:55,318 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 11:59:55,403 INFO ]: Executing SMT file /storage/chc-comp/llreve-bench/smt2/loop__upcount.smt2 unknown de.uni_freiburg.informatik.ultimate.plugins.generator.treeautomizer.parsing.HornClauseParserScript$1@2b2ae136 [2018-06-22 11:59:55,568 INFO ]: Succesfully executed SMT file /storage/chc-comp/llreve-bench/smt2/loop__upcount.smt2 [2018-06-22 11:59:55,573 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 11:59:55,588 INFO ]: Walking toolchain with 4 elements. [2018-06-22 11:59:55,589 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 11:59:55,589 INFO ]: Initializing ChcToBoogie... [2018-06-22 11:59:55,589 INFO ]: ChcToBoogie initialized [2018-06-22 11:59:55,596 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 11:59:55" (1/1) ... [2018-06-22 11:59:55,643 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:59:55 Unit [2018-06-22 11:59:55,643 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 11:59:55,644 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 11:59:55,644 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 11:59:55,644 INFO ]: Boogie Preprocessor initialized [2018-06-22 11:59:55,665 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:59:55" (1/1) ... [2018-06-22 11:59:55,665 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:59:55" (1/1) ... [2018-06-22 11:59:55,670 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:59:55" (1/1) ... [2018-06-22 11:59:55,670 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:59:55" (1/1) ... [2018-06-22 11:59:55,672 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:59:55" (1/1) ... [2018-06-22 11:59:55,673 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:59:55" (1/1) ... [2018-06-22 11:59:55,674 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:59:55" (1/1) ... [2018-06-22 11:59:55,675 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 11:59:55,677 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 11:59:55,677 INFO ]: Initializing RCFGBuilder... [2018-06-22 11:59:55,677 INFO ]: RCFGBuilder initialized [2018-06-22 11:59:55,677 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:59:55" (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 11:59:55,688 INFO ]: Specification and implementation of procedure False given in one single declaration [2018-06-22 11:59:55,688 INFO ]: Found specification of procedure False [2018-06-22 11:59:55,689 INFO ]: Found implementation of procedure False [2018-06-22 11:59:55,689 INFO ]: Specification and implementation of procedure INV_MAIN_42 given in one single declaration [2018-06-22 11:59:55,689 INFO ]: Found specification of procedure INV_MAIN_42 [2018-06-22 11:59:55,689 INFO ]: Found implementation of procedure INV_MAIN_42 [2018-06-22 11:59:55,689 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 11:59:55,689 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 11:59:55,689 INFO ]: Found implementation of procedure Ultimate.START [2018-06-22 11:59:55,925 INFO ]: Using library mode [2018-06-22 11:59:55,925 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 11:59:55 BoogieIcfgContainer [2018-06-22 11:59:55,925 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 11:59:55,926 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 11:59:55,926 INFO ]: Initializing TraceAbstraction... [2018-06-22 11:59:55,929 INFO ]: TraceAbstraction initialized [2018-06-22 11:59:55,930 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 11:59:55" (1/3) ... [2018-06-22 11:59:55,932 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d793397 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 11:59:55, skipping insertion in model container [2018-06-22 11:59:55,932 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:59:55" (2/3) ... [2018-06-22 11:59:55,932 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d793397 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 11:59:55, skipping insertion in model container [2018-06-22 11:59:55,932 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 11:59:55" (3/3) ... [2018-06-22 11:59:55,934 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 11:59:55,944 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 11:59:55,955 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 11:59:55,989 INFO ]: Using default assertion order modulation [2018-06-22 11:59:55,990 INFO ]: Interprodecural is true [2018-06-22 11:59:55,990 INFO ]: Hoare is false [2018-06-22 11:59:55,990 INFO ]: Compute interpolants for FPandBP [2018-06-22 11:59:55,990 INFO ]: Backedges is TWOTRACK [2018-06-22 11:59:55,990 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 11:59:55,990 INFO ]: Difference is false [2018-06-22 11:59:55,990 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 11:59:55,990 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 11:59:56,005 INFO ]: Start isEmpty. Operand 15 states. [2018-06-22 11:59:56,023 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 11:59:56,023 INFO ]: Found error trace [2018-06-22 11:59:56,023 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:59:56,024 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:59:56,029 INFO ]: Analyzing trace with hash -911285918, now seen corresponding path program 1 times [2018-06-22 11:59:56,031 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:59:56,031 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:59:56,065 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:59:56,065 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:59:56,065 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:59:56,097 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:59:56,232 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 11:59:56,243 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 11:59:56,243 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 11:59:56,245 INFO ]: Interpolant automaton has 4 states [2018-06-22 11:59:56,260 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 11:59:56,261 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 11:59:56,263 INFO ]: Start difference. First operand 15 states. Second operand 4 states. [2018-06-22 11:59:56,386 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:59:56,386 INFO ]: Finished difference Result 15 states and 22 transitions. [2018-06-22 11:59:56,388 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 11:59:56,389 INFO ]: Start accepts. Automaton has 4 states. Word has length 9 [2018-06-22 11:59:56,390 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:59:56,403 INFO ]: With dead ends: 15 [2018-06-22 11:59:56,404 INFO ]: Without dead ends: 15 [2018-06-22 11:59:56,405 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 11:59:56,422 INFO ]: Start minimizeSevpa. Operand 15 states. [2018-06-22 11:59:56,455 INFO ]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-06-22 11:59:56,457 INFO ]: Start removeUnreachable. Operand 15 states. [2018-06-22 11:59:56,457 INFO ]: Finished removeUnreachable. Reduced from 15 states to 15 states and 22 transitions. [2018-06-22 11:59:56,458 INFO ]: Start accepts. Automaton has 15 states and 22 transitions. Word has length 9 [2018-06-22 11:59:56,459 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:59:56,459 INFO ]: Abstraction has 15 states and 22 transitions. [2018-06-22 11:59:56,459 INFO ]: Interpolant automaton has 4 states. [2018-06-22 11:59:56,459 INFO ]: Start isEmpty. Operand 15 states and 22 transitions. [2018-06-22 11:59:56,461 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-22 11:59:56,461 INFO ]: Found error trace [2018-06-22 11:59:56,461 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:59:56,461 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:59:56,462 INFO ]: Analyzing trace with hash 2036612432, now seen corresponding path program 1 times [2018-06-22 11:59:56,462 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:59:56,462 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:59:56,462 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:59:56,462 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:59:56,462 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:59:56,471 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:59:56,552 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 11:59:56,552 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:59:56,552 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 11:59:56,566 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:59:56,610 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:59:56,619 INFO ]: Computing forward predicates... [2018-06-22 11:59:56,715 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 11:59:56,748 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:59:56,748 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2018-06-22 11:59:56,749 INFO ]: Interpolant automaton has 7 states [2018-06-22 11:59:56,749 INFO ]: Constructing interpolant automaton starting with 7 interpolants. [2018-06-22 11:59:56,749 INFO ]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2018-06-22 11:59:56,749 INFO ]: Start difference. First operand 15 states and 22 transitions. Second operand 7 states. [2018-06-22 11:59:57,548 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:59:57,549 INFO ]: Finished difference Result 23 states and 39 transitions. [2018-06-22 11:59:57,549 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-22 11:59:57,549 INFO ]: Start accepts. Automaton has 7 states. Word has length 13 [2018-06-22 11:59:57,549 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:59:57,550 INFO ]: With dead ends: 23 [2018-06-22 11:59:57,550 INFO ]: Without dead ends: 23 [2018-06-22 11:59:57,551 INFO ]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2018-06-22 11:59:57,551 INFO ]: Start minimizeSevpa. Operand 23 states. [2018-06-22 11:59:57,560 INFO ]: Finished minimizeSevpa. Reduced states from 23 to 17. [2018-06-22 11:59:57,560 INFO ]: Start removeUnreachable. Operand 17 states. [2018-06-22 11:59:57,561 INFO ]: Finished removeUnreachable. Reduced from 17 states to 17 states and 26 transitions. [2018-06-22 11:59:57,561 INFO ]: Start accepts. Automaton has 17 states and 26 transitions. Word has length 13 [2018-06-22 11:59:57,561 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:59:57,561 INFO ]: Abstraction has 17 states and 26 transitions. [2018-06-22 11:59:57,561 INFO ]: Interpolant automaton has 7 states. [2018-06-22 11:59:57,562 INFO ]: Start isEmpty. Operand 17 states and 26 transitions. [2018-06-22 11:59:57,562 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-22 11:59:57,562 INFO ]: Found error trace [2018-06-22 11:59:57,563 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:59:57,563 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:59:57,563 INFO ]: Analyzing trace with hash 1791361579, now seen corresponding path program 1 times [2018-06-22 11:59:57,563 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:59:57,563 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:59:57,564 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:59:57,564 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:59:57,564 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:59:57,574 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:59:57,756 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 11:59:57,756 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:59:57,757 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 11:59:57,766 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:59:57,776 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:59:57,778 INFO ]: Computing forward predicates... [2018-06-22 11:59:57,840 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 11:59:57,873 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:59:57,874 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2018-06-22 11:59:57,874 INFO ]: Interpolant automaton has 8 states [2018-06-22 11:59:57,874 INFO ]: Constructing interpolant automaton starting with 8 interpolants. [2018-06-22 11:59:57,874 INFO ]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2018-06-22 11:59:57,874 INFO ]: Start difference. First operand 17 states and 26 transitions. Second operand 8 states. [2018-06-22 11:59:58,184 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:59:58,184 INFO ]: Finished difference Result 21 states and 35 transitions. [2018-06-22 11:59:58,184 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-22 11:59:58,184 INFO ]: Start accepts. Automaton has 8 states. Word has length 13 [2018-06-22 11:59:58,184 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:59:58,185 INFO ]: With dead ends: 21 [2018-06-22 11:59:58,185 INFO ]: Without dead ends: 21 [2018-06-22 11:59:58,185 INFO ]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2018-06-22 11:59:58,185 INFO ]: Start minimizeSevpa. Operand 21 states. [2018-06-22 11:59:58,191 INFO ]: Finished minimizeSevpa. Reduced states from 21 to 19. [2018-06-22 11:59:58,191 INFO ]: Start removeUnreachable. Operand 19 states. [2018-06-22 11:59:58,192 INFO ]: Finished removeUnreachable. Reduced from 19 states to 19 states and 30 transitions. [2018-06-22 11:59:58,192 INFO ]: Start accepts. Automaton has 19 states and 30 transitions. Word has length 13 [2018-06-22 11:59:58,192 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:59:58,192 INFO ]: Abstraction has 19 states and 30 transitions. [2018-06-22 11:59:58,192 INFO ]: Interpolant automaton has 8 states. [2018-06-22 11:59:58,192 INFO ]: Start isEmpty. Operand 19 states and 30 transitions. [2018-06-22 11:59:58,193 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-22 11:59:58,193 INFO ]: Found error trace [2018-06-22 11:59:58,193 INFO ]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:59:58,193 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:59:58,193 INFO ]: Analyzing trace with hash -2089869745, now seen corresponding path program 1 times [2018-06-22 11:59:58,194 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:59:58,194 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:59:58,194 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:59:58,194 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:59:58,194 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:59:58,202 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:59:58,249 INFO ]: Checked inductivity of 9 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 11:59:58,249 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 11:59:58,249 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 11:59:58,249 INFO ]: Interpolant automaton has 4 states [2018-06-22 11:59:58,250 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 11:59:58,250 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 11:59:58,250 INFO ]: Start difference. First operand 19 states and 30 transitions. Second operand 4 states. [2018-06-22 11:59:58,646 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:59:58,646 INFO ]: Finished difference Result 34 states and 60 transitions. [2018-06-22 11:59:58,646 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-22 11:59:58,647 INFO ]: Start accepts. Automaton has 4 states. Word has length 17 [2018-06-22 11:59:58,647 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:59:58,648 INFO ]: With dead ends: 34 [2018-06-22 11:59:58,648 INFO ]: Without dead ends: 34 [2018-06-22 11:59:58,648 INFO ]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-06-22 11:59:58,649 INFO ]: Start minimizeSevpa. Operand 34 states. [2018-06-22 11:59:58,657 INFO ]: Finished minimizeSevpa. Reduced states from 34 to 28. [2018-06-22 11:59:58,657 INFO ]: Start removeUnreachable. Operand 28 states. [2018-06-22 11:59:58,659 INFO ]: Finished removeUnreachable. Reduced from 28 states to 28 states and 47 transitions. [2018-06-22 11:59:58,659 INFO ]: Start accepts. Automaton has 28 states and 47 transitions. Word has length 17 [2018-06-22 11:59:58,659 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:59:58,659 INFO ]: Abstraction has 28 states and 47 transitions. [2018-06-22 11:59:58,659 INFO ]: Interpolant automaton has 4 states. [2018-06-22 11:59:58,659 INFO ]: Start isEmpty. Operand 28 states and 47 transitions. [2018-06-22 11:59:58,660 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-22 11:59:58,660 INFO ]: Found error trace [2018-06-22 11:59:58,660 INFO ]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:59:58,661 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:59:58,661 INFO ]: Analyzing trace with hash -106792002, now seen corresponding path program 2 times [2018-06-22 11:59:58,661 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:59:58,661 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:59:58,661 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:59:58,662 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:59:58,662 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:59:58,673 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:59:58,807 INFO ]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-06-22 11:59:58,807 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:59:58,807 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 11:59:58,814 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 11:59:58,836 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 11:59:58,836 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:59:58,838 INFO ]: Computing forward predicates... [2018-06-22 11:59:58,938 INFO ]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-06-22 11:59:58,962 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:59:58,962 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2018-06-22 11:59:58,962 INFO ]: Interpolant automaton has 9 states [2018-06-22 11:59:58,962 INFO ]: Constructing interpolant automaton starting with 9 interpolants. [2018-06-22 11:59:58,963 INFO ]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2018-06-22 11:59:58,963 INFO ]: Start difference. First operand 28 states and 47 transitions. Second operand 9 states. [2018-06-22 11:59:59,182 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:59:59,182 INFO ]: Finished difference Result 40 states and 71 transitions. [2018-06-22 11:59:59,183 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-22 11:59:59,183 INFO ]: Start accepts. Automaton has 9 states. Word has length 17 [2018-06-22 11:59:59,183 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:59:59,184 INFO ]: With dead ends: 40 [2018-06-22 11:59:59,184 INFO ]: Without dead ends: 40 [2018-06-22 11:59:59,185 INFO ]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2018-06-22 11:59:59,185 INFO ]: Start minimizeSevpa. Operand 40 states. [2018-06-22 11:59:59,194 INFO ]: Finished minimizeSevpa. Reduced states from 40 to 30. [2018-06-22 11:59:59,194 INFO ]: Start removeUnreachable. Operand 30 states. [2018-06-22 11:59:59,196 INFO ]: Finished removeUnreachable. Reduced from 30 states to 30 states and 52 transitions. [2018-06-22 11:59:59,196 INFO ]: Start accepts. Automaton has 30 states and 52 transitions. Word has length 17 [2018-06-22 11:59:59,196 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:59:59,196 INFO ]: Abstraction has 30 states and 52 transitions. [2018-06-22 11:59:59,196 INFO ]: Interpolant automaton has 9 states. [2018-06-22 11:59:59,196 INFO ]: Start isEmpty. Operand 30 states and 52 transitions. [2018-06-22 11:59:59,198 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-22 11:59:59,198 INFO ]: Found error trace [2018-06-22 11:59:59,198 INFO ]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:59:59,198 INFO ]: === Iteration 6 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:59:59,198 INFO ]: Analyzing trace with hash 1130834457, now seen corresponding path program 1 times [2018-06-22 11:59:59,198 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:59:59,198 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:59:59,199 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:59:59,199 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 11:59:59,199 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:59:59,211 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:59:59,343 INFO ]: Checked inductivity of 9 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-06-22 11:59:59,343 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:59:59,343 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 11:59:59,349 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:59:59,368 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:59:59,370 INFO ]: Computing forward predicates... [2018-06-22 11:59:59,461 INFO ]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 11:59:59,492 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:59:59,492 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 11 [2018-06-22 11:59:59,492 INFO ]: Interpolant automaton has 11 states [2018-06-22 11:59:59,492 INFO ]: Constructing interpolant automaton starting with 11 interpolants. [2018-06-22 11:59:59,492 INFO ]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2018-06-22 11:59:59,492 INFO ]: Start difference. First operand 30 states and 52 transitions. Second operand 11 states. [2018-06-22 11:59:59,768 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:59:59,768 INFO ]: Finished difference Result 52 states and 93 transitions. [2018-06-22 11:59:59,769 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-06-22 11:59:59,769 INFO ]: Start accepts. Automaton has 11 states. Word has length 17 [2018-06-22 11:59:59,769 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:59:59,771 INFO ]: With dead ends: 52 [2018-06-22 11:59:59,771 INFO ]: Without dead ends: 52 [2018-06-22 11:59:59,771 INFO ]: 0 DeclaredPredicates, 29 GetRequests, 13 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2018-06-22 11:59:59,771 INFO ]: Start minimizeSevpa. Operand 52 states. [2018-06-22 11:59:59,782 INFO ]: Finished minimizeSevpa. Reduced states from 52 to 28. [2018-06-22 11:59:59,782 INFO ]: Start removeUnreachable. Operand 28 states. [2018-06-22 11:59:59,783 INFO ]: Finished removeUnreachable. Reduced from 28 states to 28 states and 47 transitions. [2018-06-22 11:59:59,783 INFO ]: Start accepts. Automaton has 28 states and 47 transitions. Word has length 17 [2018-06-22 11:59:59,783 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:59:59,783 INFO ]: Abstraction has 28 states and 47 transitions. [2018-06-22 11:59:59,783 INFO ]: Interpolant automaton has 11 states. [2018-06-22 11:59:59,783 INFO ]: Start isEmpty. Operand 28 states and 47 transitions. [2018-06-22 11:59:59,784 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-22 11:59:59,784 INFO ]: Found error trace [2018-06-22 11:59:59,784 INFO ]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:59:59,784 INFO ]: === Iteration 7 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:59:59,784 INFO ]: Analyzing trace with hash 1667966004, now seen corresponding path program 2 times [2018-06-22 11:59:59,784 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:59:59,784 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:59:59,785 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:59:59,785 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:59:59,785 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:59:59,792 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:59:59,825 INFO ]: Checked inductivity of 10 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 11:59:59,825 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:59:59,825 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 11:59:59,831 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 11:59:59,851 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 11:59:59,851 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:59:59,853 INFO ]: Computing forward predicates... [2018-06-22 11:59:59,875 INFO ]: Checked inductivity of 10 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 11:59:59,897 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:59:59,897 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2018-06-22 11:59:59,897 INFO ]: Interpolant automaton has 7 states [2018-06-22 11:59:59,897 INFO ]: Constructing interpolant automaton starting with 7 interpolants. [2018-06-22 11:59:59,897 INFO ]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2018-06-22 11:59:59,897 INFO ]: Start difference. First operand 28 states and 47 transitions. Second operand 7 states. [2018-06-22 12:00:00,038 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 12:00:00,038 INFO ]: Finished difference Result 40 states and 70 transitions. [2018-06-22 12:00:00,039 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-22 12:00:00,039 INFO ]: Start accepts. Automaton has 7 states. Word has length 17 [2018-06-22 12:00:00,039 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 12:00:00,041 INFO ]: With dead ends: 40 [2018-06-22 12:00:00,041 INFO ]: Without dead ends: 40 [2018-06-22 12:00:00,042 INFO ]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2018-06-22 12:00:00,042 INFO ]: Start minimizeSevpa. Operand 40 states. [2018-06-22 12:00:00,050 INFO ]: Finished minimizeSevpa. Reduced states from 40 to 32. [2018-06-22 12:00:00,050 INFO ]: Start removeUnreachable. Operand 32 states. [2018-06-22 12:00:00,051 INFO ]: Finished removeUnreachable. Reduced from 32 states to 32 states and 55 transitions. [2018-06-22 12:00:00,051 INFO ]: Start accepts. Automaton has 32 states and 55 transitions. Word has length 17 [2018-06-22 12:00:00,051 INFO ]: Finished accepts. word is rejected. [2018-06-22 12:00:00,051 INFO ]: Abstraction has 32 states and 55 transitions. [2018-06-22 12:00:00,051 INFO ]: Interpolant automaton has 7 states. [2018-06-22 12:00:00,051 INFO ]: Start isEmpty. Operand 32 states and 55 transitions. [2018-06-22 12:00:00,052 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-22 12:00:00,052 INFO ]: Found error trace [2018-06-22 12:00:00,052 INFO ]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 12:00:00,052 INFO ]: === Iteration 8 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 12:00:00,053 INFO ]: Analyzing trace with hash -1389374833, now seen corresponding path program 2 times [2018-06-22 12:00:00,053 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 12:00:00,053 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 12:00:00,053 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 12:00:00,053 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 12:00:00,053 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 12:00:00,058 INFO ]: Conjunction of SSA is unsat [2018-06-22 12:00:00,079 INFO ]: Checked inductivity of 9 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 12:00:00,079 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 12:00:00,079 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 12:00:00,079 INFO ]: Interpolant automaton has 4 states [2018-06-22 12:00:00,079 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 12:00:00,079 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 12:00:00,079 INFO ]: Start difference. First operand 32 states and 55 transitions. Second operand 4 states. [2018-06-22 12:00:00,117 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 12:00:00,117 INFO ]: Finished difference Result 49 states and 86 transitions. [2018-06-22 12:00:00,117 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-22 12:00:00,117 INFO ]: Start accepts. Automaton has 4 states. Word has length 17 [2018-06-22 12:00:00,117 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 12:00:00,119 INFO ]: With dead ends: 49 [2018-06-22 12:00:00,119 INFO ]: Without dead ends: 41 [2018-06-22 12:00:00,119 INFO ]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-06-22 12:00:00,119 INFO ]: Start minimizeSevpa. Operand 41 states. [2018-06-22 12:00:00,127 INFO ]: Finished minimizeSevpa. Reduced states from 41 to 37. [2018-06-22 12:00:00,127 INFO ]: Start removeUnreachable. Operand 37 states. [2018-06-22 12:00:00,128 INFO ]: Finished removeUnreachable. Reduced from 37 states to 37 states and 63 transitions. [2018-06-22 12:00:00,128 INFO ]: Start accepts. Automaton has 37 states and 63 transitions. Word has length 17 [2018-06-22 12:00:00,128 INFO ]: Finished accepts. word is rejected. [2018-06-22 12:00:00,128 INFO ]: Abstraction has 37 states and 63 transitions. [2018-06-22 12:00:00,128 INFO ]: Interpolant automaton has 4 states. [2018-06-22 12:00:00,128 INFO ]: Start isEmpty. Operand 37 states and 63 transitions. [2018-06-22 12:00:00,129 INFO ]: Finished isEmpty. Found accepting run of length 22 [2018-06-22 12:00:00,129 INFO ]: Found error trace [2018-06-22 12:00:00,129 INFO ]: trace histogram [4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 12:00:00,129 INFO ]: === Iteration 9 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 12:00:00,130 INFO ]: Analyzing trace with hash 1438430178, now seen corresponding path program 2 times [2018-06-22 12:00:00,130 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 12:00:00,130 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 12:00:00,130 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 12:00:00,130 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 12:00:00,130 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 12:00:00,137 INFO ]: Conjunction of SSA is unsat [2018-06-22 12:00:00,198 INFO ]: Checked inductivity of 19 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2018-06-22 12:00:00,198 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 12:00:00,198 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 12:00:00,198 INFO ]: Interpolant automaton has 4 states [2018-06-22 12:00:00,199 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 12:00:00,199 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 12:00:00,199 INFO ]: Start difference. First operand 37 states and 63 transitions. Second operand 4 states. [2018-06-22 12:00:00,226 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 12:00:00,226 INFO ]: Finished difference Result 41 states and 60 transitions. [2018-06-22 12:00:00,226 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-22 12:00:00,226 INFO ]: Start accepts. Automaton has 4 states. Word has length 21 [2018-06-22 12:00:00,226 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 12:00:00,227 INFO ]: With dead ends: 41 [2018-06-22 12:00:00,227 INFO ]: Without dead ends: 37 [2018-06-22 12:00:00,228 INFO ]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-06-22 12:00:00,228 INFO ]: Start minimizeSevpa. Operand 37 states. [2018-06-22 12:00:00,233 INFO ]: Finished minimizeSevpa. Reduced states from 37 to 33. [2018-06-22 12:00:00,233 INFO ]: Start removeUnreachable. Operand 33 states. [2018-06-22 12:00:00,234 INFO ]: Finished removeUnreachable. Reduced from 33 states to 33 states and 50 transitions. [2018-06-22 12:00:00,234 INFO ]: Start accepts. Automaton has 33 states and 50 transitions. Word has length 21 [2018-06-22 12:00:00,234 INFO ]: Finished accepts. word is rejected. [2018-06-22 12:00:00,234 INFO ]: Abstraction has 33 states and 50 transitions. [2018-06-22 12:00:00,234 INFO ]: Interpolant automaton has 4 states. [2018-06-22 12:00:00,234 INFO ]: Start isEmpty. Operand 33 states and 50 transitions. [2018-06-22 12:00:00,236 INFO ]: Finished isEmpty. Found accepting run of length 22 [2018-06-22 12:00:00,236 INFO ]: Found error trace [2018-06-22 12:00:00,236 INFO ]: trace histogram [4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 12:00:00,236 INFO ]: === Iteration 10 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 12:00:00,236 INFO ]: Analyzing trace with hash -2116221982, now seen corresponding path program 1 times [2018-06-22 12:00:00,236 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 12:00:00,236 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 12:00:00,237 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 12:00:00,237 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 12:00:00,237 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 12:00:00,241 INFO ]: Conjunction of SSA is unsat [2018-06-22 12:00:00,260 INFO ]: Checked inductivity of 19 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2018-06-22 12:00:00,260 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 12:00:00,260 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 12:00:00,267 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 12:00:00,288 INFO ]: Conjunction of SSA is unsat [2018-06-22 12:00:00,290 INFO ]: Computing forward predicates... [2018-06-22 12:00:00,377 INFO ]: Checked inductivity of 19 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2018-06-22 12:00:00,408 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 12:00:00,408 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2018-06-22 12:00:00,409 INFO ]: Interpolant automaton has 4 states [2018-06-22 12:00:00,409 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 12:00:00,409 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 12:00:00,409 INFO ]: Start difference. First operand 33 states and 50 transitions. Second operand 4 states. [2018-06-22 12:00:00,477 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 12:00:00,478 INFO ]: Finished difference Result 29 states and 38 transitions. [2018-06-22 12:00:00,478 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-22 12:00:00,478 INFO ]: Start accepts. Automaton has 4 states. Word has length 21 [2018-06-22 12:00:00,478 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 12:00:00,479 INFO ]: With dead ends: 29 [2018-06-22 12:00:00,479 INFO ]: Without dead ends: 22 [2018-06-22 12:00:00,479 INFO ]: 0 DeclaredPredicates, 25 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-06-22 12:00:00,479 INFO ]: Start minimizeSevpa. Operand 22 states. [2018-06-22 12:00:00,481 INFO ]: Finished minimizeSevpa. Reduced states from 22 to 20. [2018-06-22 12:00:00,481 INFO ]: Start removeUnreachable. Operand 20 states. [2018-06-22 12:00:00,482 INFO ]: Finished removeUnreachable. Reduced from 20 states to 20 states and 24 transitions. [2018-06-22 12:00:00,482 INFO ]: Start accepts. Automaton has 20 states and 24 transitions. Word has length 21 [2018-06-22 12:00:00,482 INFO ]: Finished accepts. word is rejected. [2018-06-22 12:00:00,482 INFO ]: Abstraction has 20 states and 24 transitions. [2018-06-22 12:00:00,482 INFO ]: Interpolant automaton has 4 states. [2018-06-22 12:00:00,482 INFO ]: Start isEmpty. Operand 20 states and 24 transitions. [2018-06-22 12:00:00,483 INFO ]: Finished isEmpty. Found accepting run of length 22 [2018-06-22 12:00:00,483 INFO ]: Found error trace [2018-06-22 12:00:00,483 INFO ]: trace histogram [4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 12:00:00,483 INFO ]: === Iteration 11 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 12:00:00,483 INFO ]: Analyzing trace with hash 304175138, now seen corresponding path program 3 times [2018-06-22 12:00:00,483 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 12:00:00,483 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 12:00:00,484 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 12:00:00,484 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 12:00:00,484 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 12:00:00,492 INFO ]: Conjunction of SSA is unsat [2018-06-22 12:00:00,570 INFO ]: Checked inductivity of 19 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2018-06-22 12:00:00,570 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 12:00:00,570 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 12:00:00,578 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-22 12:00:00,597 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-06-22 12:00:00,597 INFO ]: Conjunction of SSA is unsat [2018-06-22 12:00:00,599 INFO ]: Computing forward predicates... [2018-06-22 12:00:00,632 INFO ]: Checked inductivity of 19 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2018-06-22 12:00:00,651 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 12:00:00,651 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2018-06-22 12:00:00,651 INFO ]: Interpolant automaton has 9 states [2018-06-22 12:00:00,651 INFO ]: Constructing interpolant automaton starting with 9 interpolants. [2018-06-22 12:00:00,651 INFO ]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2018-06-22 12:00:00,651 INFO ]: Start difference. First operand 20 states and 24 transitions. Second operand 9 states. [2018-06-22 12:00:00,712 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 12:00:00,712 INFO ]: Finished difference Result 16 states and 20 transitions. [2018-06-22 12:00:00,712 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-22 12:00:00,712 INFO ]: Start accepts. Automaton has 9 states. Word has length 21 [2018-06-22 12:00:00,712 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 12:00:00,712 INFO ]: With dead ends: 16 [2018-06-22 12:00:00,712 INFO ]: Without dead ends: 0 [2018-06-22 12:00:00,712 INFO ]: 0 DeclaredPredicates, 31 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2018-06-22 12:00:00,712 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-22 12:00:00,712 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-22 12:00:00,713 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-22 12:00:00,713 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-22 12:00:00,713 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2018-06-22 12:00:00,713 INFO ]: Finished accepts. word is rejected. [2018-06-22 12:00:00,713 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-22 12:00:00,713 INFO ]: Interpolant automaton has 9 states. [2018-06-22 12:00:00,713 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-22 12:00:00,713 INFO ]: Finished isEmpty. No accepting run. [2018-06-22 12:00:00,718 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 12:00:00 BoogieIcfgContainer [2018-06-22 12:00:00,718 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 12:00:00,718 INFO ]: Toolchain (without parser) took 5144.69 ms. Allocated memory was 305.1 MB in the beginning and 337.1 MB in the end (delta: 32.0 MB). Free memory was 262.5 MB in the beginning and 238.5 MB in the end (delta: 24.0 MB). Peak memory consumption was 56.0 MB. Max. memory is 3.6 GB. [2018-06-22 12:00:00,720 INFO ]: SmtParser took 0.08 ms. Allocated memory is still 305.1 MB. Free memory is still 270.6 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 12:00:00,720 INFO ]: ChcToBoogie took 54.57 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 12:00:00,721 INFO ]: Boogie Preprocessor took 31.80 ms. Allocated memory is still 305.1 MB. Free memory was 259.5 MB in the beginning and 258.5 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 3.6 GB. [2018-06-22 12:00:00,721 INFO ]: RCFGBuilder took 248.78 ms. Allocated memory is still 305.1 MB. Free memory was 258.5 MB in the beginning and 251.3 MB in the end (delta: 7.2 MB). Peak memory consumption was 7.2 MB. Max. memory is 3.6 GB. [2018-06-22 12:00:00,722 INFO ]: TraceAbstraction took 4791.22 ms. Allocated memory was 305.1 MB in the beginning and 337.1 MB in the end (delta: 32.0 MB). Free memory was 251.3 MB in the beginning and 238.5 MB in the end (delta: 12.9 MB). Peak memory consumption was 44.9 MB. Max. memory is 3.6 GB. [2018-06-22 12:00:00,725 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.08 ms. Allocated memory is still 305.1 MB. Free memory is still 270.6 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 54.57 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 31.80 ms. Allocated memory is still 305.1 MB. Free memory was 259.5 MB in the beginning and 258.5 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 248.78 ms. Allocated memory is still 305.1 MB. Free memory was 258.5 MB in the beginning and 251.3 MB in the end (delta: 7.2 MB). Peak memory consumption was 7.2 MB. Max. memory is 3.6 GB. * TraceAbstraction took 4791.22 ms. Allocated memory was 305.1 MB in the beginning and 337.1 MB in the end (delta: 32.0 MB). Free memory was 251.3 MB in the beginning and 238.5 MB in the end (delta: 12.9 MB). Peak memory consumption was 44.9 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, 15 locations, 1 error locations. SAFE Result, 4.7s OverallTime, 11 OverallIterations, 4 TraceHistogramMax, 2.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 209 SDtfs, 51 SDslu, 382 SDs, 0 SdLazy, 569 SolverSat, 66 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 199 GetRequests, 121 SyntacticMatches, 7 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37occurred in iteration=8, 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: 0.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 66 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 302 NumberOfCodeBlocks, 300 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 284 ConstructedInterpolants, 0 QuantifiedInterpolants, 12516 SizeOfPredicates, 25 NumberOfNonLiveVariables, 495 ConjunctsInSsa, 77 ConjunctsInUnsatCore, 18 InterpolantComputations, 4 PerfectInterpolantSequences, 137/183 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/loop__upcount.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_12-00-00-743.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/loop__upcount.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_12-00-00-743.csv Received shutdown request...