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_Goto.epf -i /storage/chc-comp/hopv/lia/mochi/a-max.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 01:39:17,095 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 01:39:17,097 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 01:39:17,110 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 01:39:17,111 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 01:39:17,112 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 01:39:17,113 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 01:39:17,115 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 01:39:17,116 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 01:39:17,117 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 01:39:17,118 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 01:39:17,118 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 01:39:17,119 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 01:39:17,121 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 01:39:17,122 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 01:39:17,123 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 01:39:17,126 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 01:39:17,129 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 01:39:17,138 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 01:39:17,139 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 01:39:17,140 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 01:39:17,142 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 01:39:17,143 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 01:39:17,143 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 01:39:17,144 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 01:39:17,144 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 01:39:17,145 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 01:39:17,145 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 01:39:17,152 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 01:39:17,152 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 01:39:17,152 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 01:39:17,153 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 01:39:17,153 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 01:39:17,154 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 01:39:17,154 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 01:39:17,156 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-22 01:39:17,172 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 01:39:17,173 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 01:39:17,173 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 01:39:17,173 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 01:39:17,174 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 01:39:17,174 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 01:39:17,175 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 01:39:17,175 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 01:39:17,175 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 01:39:17,175 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 01:39:17,175 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 01:39:17,176 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 01:39:17,176 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 01:39:17,176 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 01:39:17,176 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 01:39:17,176 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 01:39:17,177 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 01:39:17,178 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 01:39:17,178 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 01:39:17,218 INFO ]: Repository-Root is: /tmp [2018-06-22 01:39:17,238 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 01:39:17,243 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 01:39:17,245 INFO ]: Initializing SmtParser... [2018-06-22 01:39:17,245 INFO ]: SmtParser initialized [2018-06-22 01:39:17,246 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/hopv/lia/mochi/a-max.smt2 [2018-06-22 01:39:17,247 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 01:39:17,344 INFO ]: Executing SMT file /storage/chc-comp/hopv/lia/mochi/a-max.smt2 unknown [2018-06-22 01:39:17,604 INFO ]: Succesfully executed SMT file /storage/chc-comp/hopv/lia/mochi/a-max.smt2 [2018-06-22 01:39:17,609 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 01:39:17,615 INFO ]: Walking toolchain with 4 elements. [2018-06-22 01:39:17,616 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 01:39:17,616 INFO ]: Initializing ChcToBoogie... [2018-06-22 01:39:17,616 INFO ]: ChcToBoogie initialized [2018-06-22 01:39:17,620 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 01:39:17" (1/1) ... [2018-06-22 01:39:17,685 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:39:17 Unit [2018-06-22 01:39:17,685 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 01:39:17,686 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 01:39:17,686 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 01:39:17,686 INFO ]: Boogie Preprocessor initialized [2018-06-22 01:39:17,707 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:39:17" (1/1) ... [2018-06-22 01:39:17,707 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:39:17" (1/1) ... [2018-06-22 01:39:17,716 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:39:17" (1/1) ... [2018-06-22 01:39:17,716 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:39:17" (1/1) ... [2018-06-22 01:39:17,727 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:39:17" (1/1) ... [2018-06-22 01:39:17,730 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:39:17" (1/1) ... [2018-06-22 01:39:17,733 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:39:17" (1/1) ... [2018-06-22 01:39:17,735 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 01:39:17,735 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 01:39:17,735 INFO ]: Initializing RCFGBuilder... [2018-06-22 01:39:17,735 INFO ]: RCFGBuilder initialized [2018-06-22 01:39:17,746 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:39:17" (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 01:39:17,759 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-22 01:39:17,759 INFO ]: Found specification of procedure gotoProc [2018-06-22 01:39:17,759 INFO ]: Found implementation of procedure gotoProc [2018-06-22 01:39:17,759 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 01:39:17,760 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 01:39:17,760 INFO ]: Found implementation of procedure Ultimate.START [2018-06-22 01:39:18,231 INFO ]: Using library mode [2018-06-22 01:39:18,232 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 01:39:18 BoogieIcfgContainer [2018-06-22 01:39:18,232 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 01:39:18,234 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 01:39:18,234 INFO ]: Initializing TraceAbstraction... [2018-06-22 01:39:18,237 INFO ]: TraceAbstraction initialized [2018-06-22 01:39:18,237 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 01:39:17" (1/3) ... [2018-06-22 01:39:18,238 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d6b9579 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 01:39:18, skipping insertion in model container [2018-06-22 01:39:18,238 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:39:17" (2/3) ... [2018-06-22 01:39:18,239 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d6b9579 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 01:39:18, skipping insertion in model container [2018-06-22 01:39:18,239 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 01:39:18" (3/3) ... [2018-06-22 01:39:18,241 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 01:39:18,259 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 01:39:18,272 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 01:39:18,328 INFO ]: Using default assertion order modulation [2018-06-22 01:39:18,329 INFO ]: Interprodecural is true [2018-06-22 01:39:18,329 INFO ]: Hoare is false [2018-06-22 01:39:18,329 INFO ]: Compute interpolants for FPandBP [2018-06-22 01:39:18,329 INFO ]: Backedges is TWOTRACK [2018-06-22 01:39:18,329 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 01:39:18,329 INFO ]: Difference is false [2018-06-22 01:39:18,329 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 01:39:18,329 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 01:39:18,352 INFO ]: Start isEmpty. Operand 22 states. [2018-06-22 01:39:18,368 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-22 01:39:18,368 INFO ]: Found error trace [2018-06-22 01:39:18,369 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:39:18,369 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:39:18,375 INFO ]: Analyzing trace with hash -99021441, now seen corresponding path program 1 times [2018-06-22 01:39:18,377 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:39:18,377 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:39:18,416 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:39:18,416 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:39:18,417 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:39:18,463 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:39:18,575 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 01:39:18,577 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 01:39:18,577 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 01:39:18,578 INFO ]: Interpolant automaton has 4 states [2018-06-22 01:39:18,593 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 01:39:18,593 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 01:39:18,595 INFO ]: Start difference. First operand 22 states. Second operand 4 states. [2018-06-22 01:39:19,000 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:39:19,000 INFO ]: Finished difference Result 37 states and 55 transitions. [2018-06-22 01:39:19,001 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-22 01:39:19,002 INFO ]: Start accepts. Automaton has 4 states. Word has length 8 [2018-06-22 01:39:19,002 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:39:19,012 INFO ]: With dead ends: 37 [2018-06-22 01:39:19,012 INFO ]: Without dead ends: 37 [2018-06-22 01:39:19,014 INFO ]: 0 DeclaredPredicates, 5 GetRequests, 2 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 01:39:19,029 INFO ]: Start minimizeSevpa. Operand 37 states. [2018-06-22 01:39:19,055 INFO ]: Finished minimizeSevpa. Reduced states from 37 to 37. [2018-06-22 01:39:19,057 INFO ]: Start removeUnreachable. Operand 37 states. [2018-06-22 01:39:19,060 INFO ]: Finished removeUnreachable. Reduced from 37 states to 37 states and 55 transitions. [2018-06-22 01:39:19,062 INFO ]: Start accepts. Automaton has 37 states and 55 transitions. Word has length 8 [2018-06-22 01:39:19,062 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:39:19,062 INFO ]: Abstraction has 37 states and 55 transitions. [2018-06-22 01:39:19,063 INFO ]: Interpolant automaton has 4 states. [2018-06-22 01:39:19,063 INFO ]: Start isEmpty. Operand 37 states and 55 transitions. [2018-06-22 01:39:19,065 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-22 01:39:19,067 INFO ]: Found error trace [2018-06-22 01:39:19,067 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:39:19,067 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:39:19,067 INFO ]: Analyzing trace with hash -105932953, now seen corresponding path program 1 times [2018-06-22 01:39:19,067 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:39:19,067 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:39:19,068 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:39:19,068 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:39:19,068 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:39:19,073 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:39:19,108 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 01:39:19,108 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 01:39:19,108 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 01:39:19,109 INFO ]: Interpolant automaton has 4 states [2018-06-22 01:39:19,109 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 01:39:19,109 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 01:39:19,110 INFO ]: Start difference. First operand 37 states and 55 transitions. Second operand 4 states. [2018-06-22 01:39:19,700 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:39:19,700 INFO ]: Finished difference Result 54 states and 81 transitions. [2018-06-22 01:39:19,702 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-22 01:39:19,702 INFO ]: Start accepts. Automaton has 4 states. Word has length 8 [2018-06-22 01:39:19,702 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:39:19,704 INFO ]: With dead ends: 54 [2018-06-22 01:39:19,705 INFO ]: Without dead ends: 54 [2018-06-22 01:39:19,706 INFO ]: 0 DeclaredPredicates, 5 GetRequests, 2 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 01:39:19,709 INFO ]: Start minimizeSevpa. Operand 54 states. [2018-06-22 01:39:19,718 INFO ]: Finished minimizeSevpa. Reduced states from 54 to 54. [2018-06-22 01:39:19,718 INFO ]: Start removeUnreachable. Operand 54 states. [2018-06-22 01:39:19,721 INFO ]: Finished removeUnreachable. Reduced from 54 states to 54 states and 81 transitions. [2018-06-22 01:39:19,721 INFO ]: Start accepts. Automaton has 54 states and 81 transitions. Word has length 8 [2018-06-22 01:39:19,721 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:39:19,721 INFO ]: Abstraction has 54 states and 81 transitions. [2018-06-22 01:39:19,721 INFO ]: Interpolant automaton has 4 states. [2018-06-22 01:39:19,721 INFO ]: Start isEmpty. Operand 54 states and 81 transitions. [2018-06-22 01:39:19,727 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 01:39:19,727 INFO ]: Found error trace [2018-06-22 01:39:19,727 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:39:19,727 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:39:19,727 INFO ]: Analyzing trace with hash 1029026521, now seen corresponding path program 1 times [2018-06-22 01:39:19,727 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:39:19,727 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:39:19,728 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:39:19,728 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:39:19,728 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:39:19,742 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:39:19,823 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 01:39:19,823 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 01:39:19,823 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-22 01:39:19,823 INFO ]: Interpolant automaton has 3 states [2018-06-22 01:39:19,823 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-22 01:39:19,823 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-22 01:39:19,824 INFO ]: Start difference. First operand 54 states and 81 transitions. Second operand 3 states. [2018-06-22 01:39:19,882 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:39:19,882 INFO ]: Finished difference Result 69 states and 115 transitions. [2018-06-22 01:39:19,883 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-22 01:39:19,883 INFO ]: Start accepts. Automaton has 3 states. Word has length 9 [2018-06-22 01:39:19,883 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:39:19,891 INFO ]: With dead ends: 69 [2018-06-22 01:39:19,892 INFO ]: Without dead ends: 69 [2018-06-22 01:39:19,892 INFO ]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-22 01:39:19,892 INFO ]: Start minimizeSevpa. Operand 69 states. [2018-06-22 01:39:19,907 INFO ]: Finished minimizeSevpa. Reduced states from 69 to 57. [2018-06-22 01:39:19,907 INFO ]: Start removeUnreachable. Operand 57 states. [2018-06-22 01:39:19,909 INFO ]: Finished removeUnreachable. Reduced from 57 states to 57 states and 87 transitions. [2018-06-22 01:39:19,909 INFO ]: Start accepts. Automaton has 57 states and 87 transitions. Word has length 9 [2018-06-22 01:39:19,909 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:39:19,909 INFO ]: Abstraction has 57 states and 87 transitions. [2018-06-22 01:39:19,909 INFO ]: Interpolant automaton has 3 states. [2018-06-22 01:39:19,909 INFO ]: Start isEmpty. Operand 57 states and 87 transitions. [2018-06-22 01:39:19,912 INFO ]: Finished isEmpty. Found accepting run of length 19 [2018-06-22 01:39:19,912 INFO ]: Found error trace [2018-06-22 01:39:19,912 INFO ]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:39:19,912 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:39:19,912 INFO ]: Analyzing trace with hash -1601618939, now seen corresponding path program 1 times [2018-06-22 01:39:19,912 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:39:19,912 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:39:19,913 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:39:19,913 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:39:19,913 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:39:19,952 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:39:20,123 INFO ]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-06-22 01:39:20,123 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 01:39:20,123 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 01:39:20,134 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:39:20,197 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:39:20,214 INFO ]: Computing forward predicates... [2018-06-22 01:39:20,798 WARN ]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-06-22 01:39:21,662 INFO ]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-06-22 01:39:21,687 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 01:39:21,687 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2018-06-22 01:39:21,687 INFO ]: Interpolant automaton has 16 states [2018-06-22 01:39:21,687 INFO ]: Constructing interpolant automaton starting with 16 interpolants. [2018-06-22 01:39:21,688 INFO ]: CoverageRelationStatistics Valid=31, Invalid=209, Unknown=0, NotChecked=0, Total=240 [2018-06-22 01:39:21,688 INFO ]: Start difference. First operand 57 states and 87 transitions. Second operand 16 states. [2018-06-22 01:39:23,622 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:39:23,622 INFO ]: Finished difference Result 162 states and 363 transitions. [2018-06-22 01:39:23,623 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-06-22 01:39:23,623 INFO ]: Start accepts. Automaton has 16 states. Word has length 18 [2018-06-22 01:39:23,623 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:39:23,630 INFO ]: With dead ends: 162 [2018-06-22 01:39:23,630 INFO ]: Without dead ends: 143 [2018-06-22 01:39:23,631 INFO ]: 0 DeclaredPredicates, 41 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=150, Invalid=780, Unknown=0, NotChecked=0, Total=930 [2018-06-22 01:39:23,631 INFO ]: Start minimizeSevpa. Operand 143 states. [2018-06-22 01:39:23,668 INFO ]: Finished minimizeSevpa. Reduced states from 143 to 77. [2018-06-22 01:39:23,668 INFO ]: Start removeUnreachable. Operand 77 states. [2018-06-22 01:39:23,670 INFO ]: Finished removeUnreachable. Reduced from 77 states to 77 states and 134 transitions. [2018-06-22 01:39:23,670 INFO ]: Start accepts. Automaton has 77 states and 134 transitions. Word has length 18 [2018-06-22 01:39:23,670 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:39:23,670 INFO ]: Abstraction has 77 states and 134 transitions. [2018-06-22 01:39:23,670 INFO ]: Interpolant automaton has 16 states. [2018-06-22 01:39:23,670 INFO ]: Start isEmpty. Operand 77 states and 134 transitions. [2018-06-22 01:39:23,673 INFO ]: Finished isEmpty. Found accepting run of length 19 [2018-06-22 01:39:23,673 INFO ]: Found error trace [2018-06-22 01:39:23,673 INFO ]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:39:23,673 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:39:23,673 INFO ]: Analyzing trace with hash 2088276461, now seen corresponding path program 1 times [2018-06-22 01:39:23,673 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:39:23,673 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:39:23,674 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:39:23,674 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:39:23,674 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:39:23,686 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:39:23,771 INFO ]: Checked inductivity of 8 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 01:39:23,771 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 01:39:23,771 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 01:39:23,772 INFO ]: Interpolant automaton has 4 states [2018-06-22 01:39:23,772 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 01:39:23,772 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 01:39:23,772 INFO ]: Start difference. First operand 77 states and 134 transitions. Second operand 4 states. [2018-06-22 01:39:23,885 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:39:23,885 INFO ]: Finished difference Result 98 states and 170 transitions. [2018-06-22 01:39:23,886 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-22 01:39:23,886 INFO ]: Start accepts. Automaton has 4 states. Word has length 18 [2018-06-22 01:39:23,886 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:39:23,888 INFO ]: With dead ends: 98 [2018-06-22 01:39:23,888 INFO ]: Without dead ends: 77 [2018-06-22 01:39:23,888 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 01:39:23,889 INFO ]: Start minimizeSevpa. Operand 77 states. [2018-06-22 01:39:23,901 INFO ]: Finished minimizeSevpa. Reduced states from 77 to 77. [2018-06-22 01:39:23,901 INFO ]: Start removeUnreachable. Operand 77 states. [2018-06-22 01:39:23,903 INFO ]: Finished removeUnreachable. Reduced from 77 states to 77 states and 132 transitions. [2018-06-22 01:39:23,903 INFO ]: Start accepts. Automaton has 77 states and 132 transitions. Word has length 18 [2018-06-22 01:39:23,903 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:39:23,903 INFO ]: Abstraction has 77 states and 132 transitions. [2018-06-22 01:39:23,903 INFO ]: Interpolant automaton has 4 states. [2018-06-22 01:39:23,903 INFO ]: Start isEmpty. Operand 77 states and 132 transitions. [2018-06-22 01:39:23,905 INFO ]: Finished isEmpty. Found accepting run of length 20 [2018-06-22 01:39:23,905 INFO ]: Found error trace [2018-06-22 01:39:23,905 INFO ]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:39:23,905 INFO ]: === Iteration 6 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:39:23,905 INFO ]: Analyzing trace with hash 1993705249, now seen corresponding path program 1 times [2018-06-22 01:39:23,905 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:39:23,905 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:39:23,906 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:39:23,906 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:39:23,906 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:39:23,926 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:39:24,225 INFO ]: Checked inductivity of 6 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 01:39:24,225 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 01:39:24,225 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 01:39:24,233 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:39:24,263 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:39:24,265 INFO ]: Computing forward predicates... [2018-06-22 01:39:24,399 INFO ]: Checked inductivity of 6 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 01:39:24,422 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 01:39:24,422 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2018-06-22 01:39:24,422 INFO ]: Interpolant automaton has 10 states [2018-06-22 01:39:24,422 INFO ]: Constructing interpolant automaton starting with 10 interpolants. [2018-06-22 01:39:24,422 INFO ]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2018-06-22 01:39:24,422 INFO ]: Start difference. First operand 77 states and 132 transitions. Second operand 10 states. [2018-06-22 01:39:24,565 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:39:24,565 INFO ]: Finished difference Result 107 states and 180 transitions. [2018-06-22 01:39:24,566 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-22 01:39:24,566 INFO ]: Start accepts. Automaton has 10 states. Word has length 19 [2018-06-22 01:39:24,566 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:39:24,568 INFO ]: With dead ends: 107 [2018-06-22 01:39:24,568 INFO ]: Without dead ends: 83 [2018-06-22 01:39:24,568 INFO ]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2018-06-22 01:39:24,568 INFO ]: Start minimizeSevpa. Operand 83 states. [2018-06-22 01:39:24,579 INFO ]: Finished minimizeSevpa. Reduced states from 83 to 77. [2018-06-22 01:39:24,579 INFO ]: Start removeUnreachable. Operand 77 states. [2018-06-22 01:39:24,581 INFO ]: Finished removeUnreachable. Reduced from 77 states to 77 states and 129 transitions. [2018-06-22 01:39:24,581 INFO ]: Start accepts. Automaton has 77 states and 129 transitions. Word has length 19 [2018-06-22 01:39:24,581 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:39:24,581 INFO ]: Abstraction has 77 states and 129 transitions. [2018-06-22 01:39:24,581 INFO ]: Interpolant automaton has 10 states. [2018-06-22 01:39:24,581 INFO ]: Start isEmpty. Operand 77 states and 129 transitions. [2018-06-22 01:39:24,583 INFO ]: Finished isEmpty. Found accepting run of length 29 [2018-06-22 01:39:24,583 INFO ]: Found error trace [2018-06-22 01:39:24,583 INFO ]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:39:24,583 INFO ]: === Iteration 7 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:39:24,583 INFO ]: Analyzing trace with hash -1321170611, now seen corresponding path program 1 times [2018-06-22 01:39:24,583 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:39:24,583 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:39:24,584 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:39:24,584 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:39:24,584 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:39:24,606 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:39:24,853 INFO ]: Checked inductivity of 18 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-06-22 01:39:24,853 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 01:39:24,853 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 01:39:24,864 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:39:24,905 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:39:24,908 INFO ]: Computing forward predicates... [2018-06-22 01:39:25,179 INFO ]: Checked inductivity of 18 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-06-22 01:39:25,215 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 01:39:25,215 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 12] total 16 [2018-06-22 01:39:25,216 INFO ]: Interpolant automaton has 16 states [2018-06-22 01:39:25,216 INFO ]: Constructing interpolant automaton starting with 16 interpolants. [2018-06-22 01:39:25,216 INFO ]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2018-06-22 01:39:25,216 INFO ]: Start difference. First operand 77 states and 129 transitions. Second operand 16 states. [2018-06-22 01:39:26,920 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:39:26,920 INFO ]: Finished difference Result 171 states and 361 transitions. [2018-06-22 01:39:26,921 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-06-22 01:39:26,921 INFO ]: Start accepts. Automaton has 16 states. Word has length 28 [2018-06-22 01:39:26,921 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:39:26,926 INFO ]: With dead ends: 171 [2018-06-22 01:39:26,926 INFO ]: Without dead ends: 171 [2018-06-22 01:39:26,927 INFO ]: 0 DeclaredPredicates, 59 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 247 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=228, Invalid=1254, Unknown=0, NotChecked=0, Total=1482 [2018-06-22 01:39:26,927 INFO ]: Start minimizeSevpa. Operand 171 states. [2018-06-22 01:39:26,954 INFO ]: Finished minimizeSevpa. Reduced states from 171 to 91. [2018-06-22 01:39:26,954 INFO ]: Start removeUnreachable. Operand 91 states. [2018-06-22 01:39:26,956 INFO ]: Finished removeUnreachable. Reduced from 91 states to 91 states and 159 transitions. [2018-06-22 01:39:26,956 INFO ]: Start accepts. Automaton has 91 states and 159 transitions. Word has length 28 [2018-06-22 01:39:26,956 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:39:26,956 INFO ]: Abstraction has 91 states and 159 transitions. [2018-06-22 01:39:26,956 INFO ]: Interpolant automaton has 16 states. [2018-06-22 01:39:26,956 INFO ]: Start isEmpty. Operand 91 states and 159 transitions. [2018-06-22 01:39:26,959 INFO ]: Finished isEmpty. Found accepting run of length 47 [2018-06-22 01:39:26,959 INFO ]: Found error trace [2018-06-22 01:39:26,959 INFO ]: trace histogram [5, 5, 4, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:39:26,959 INFO ]: === Iteration 8 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:39:26,960 INFO ]: Analyzing trace with hash -1565282265, now seen corresponding path program 1 times [2018-06-22 01:39:26,960 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:39:26,960 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:39:26,960 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:39:26,960 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:39:26,960 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:39:26,996 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:39:27,209 INFO ]: Checked inductivity of 65 backedges. 23 proven. 14 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2018-06-22 01:39:27,209 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 01:39:27,209 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 01:39:27,217 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:39:27,267 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:39:27,271 INFO ]: Computing forward predicates... [2018-06-22 01:39:27,326 INFO ]: Checked inductivity of 65 backedges. 37 proven. 7 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2018-06-22 01:39:27,359 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 01:39:27,359 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-06-22 01:39:27,359 INFO ]: Interpolant automaton has 9 states [2018-06-22 01:39:27,360 INFO ]: Constructing interpolant automaton starting with 9 interpolants. [2018-06-22 01:39:27,360 INFO ]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2018-06-22 01:39:27,360 INFO ]: Start difference. First operand 91 states and 159 transitions. Second operand 9 states. [2018-06-22 01:39:28,115 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:39:28,115 INFO ]: Finished difference Result 155 states and 314 transitions. [2018-06-22 01:39:28,116 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-06-22 01:39:28,116 INFO ]: Start accepts. Automaton has 9 states. Word has length 46 [2018-06-22 01:39:28,116 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:39:28,120 INFO ]: With dead ends: 155 [2018-06-22 01:39:28,120 INFO ]: Without dead ends: 155 [2018-06-22 01:39:28,120 INFO ]: 0 DeclaredPredicates, 68 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=98, Invalid=282, Unknown=0, NotChecked=0, Total=380 [2018-06-22 01:39:28,120 INFO ]: Start minimizeSevpa. Operand 155 states. [2018-06-22 01:39:28,137 INFO ]: Finished minimizeSevpa. Reduced states from 155 to 112. [2018-06-22 01:39:28,138 INFO ]: Start removeUnreachable. Operand 112 states. [2018-06-22 01:39:28,140 INFO ]: Finished removeUnreachable. Reduced from 112 states to 112 states and 217 transitions. [2018-06-22 01:39:28,140 INFO ]: Start accepts. Automaton has 112 states and 217 transitions. Word has length 46 [2018-06-22 01:39:28,140 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:39:28,140 INFO ]: Abstraction has 112 states and 217 transitions. [2018-06-22 01:39:28,140 INFO ]: Interpolant automaton has 9 states. [2018-06-22 01:39:28,140 INFO ]: Start isEmpty. Operand 112 states and 217 transitions. [2018-06-22 01:39:28,145 INFO ]: Finished isEmpty. Found accepting run of length 56 [2018-06-22 01:39:28,145 INFO ]: Found error trace [2018-06-22 01:39:28,145 INFO ]: trace histogram [6, 6, 5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:39:28,145 INFO ]: === Iteration 9 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:39:28,145 INFO ]: Analyzing trace with hash 2039822537, now seen corresponding path program 2 times [2018-06-22 01:39:28,145 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:39:28,145 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:39:28,146 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:39:28,146 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:39:28,146 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:39:28,177 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:39:28,295 INFO ]: Checked inductivity of 102 backedges. 39 proven. 17 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2018-06-22 01:39:28,295 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 01:39:28,295 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 01:39:28,314 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 01:39:28,358 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 01:39:28,358 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:39:28,362 INFO ]: Computing forward predicates... [2018-06-22 01:39:28,535 INFO ]: Checked inductivity of 102 backedges. 58 proven. 14 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2018-06-22 01:39:28,556 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 01:39:28,556 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2018-06-22 01:39:28,557 INFO ]: Interpolant automaton has 12 states [2018-06-22 01:39:28,557 INFO ]: Constructing interpolant automaton starting with 12 interpolants. [2018-06-22 01:39:28,557 INFO ]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2018-06-22 01:39:28,557 INFO ]: Start difference. First operand 112 states and 217 transitions. Second operand 12 states. [2018-06-22 01:39:29,582 WARN ]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-06-22 01:39:30,547 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:39:30,547 INFO ]: Finished difference Result 216 states and 508 transitions. [2018-06-22 01:39:30,548 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-06-22 01:39:30,548 INFO ]: Start accepts. Automaton has 12 states. Word has length 55 [2018-06-22 01:39:30,548 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:39:30,555 INFO ]: With dead ends: 216 [2018-06-22 01:39:30,555 INFO ]: Without dead ends: 216 [2018-06-22 01:39:30,556 INFO ]: 0 DeclaredPredicates, 91 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=232, Invalid=824, Unknown=0, NotChecked=0, Total=1056 [2018-06-22 01:39:30,556 INFO ]: Start minimizeSevpa. Operand 216 states. [2018-06-22 01:39:30,600 INFO ]: Finished minimizeSevpa. Reduced states from 216 to 130. [2018-06-22 01:39:30,600 INFO ]: Start removeUnreachable. Operand 130 states. [2018-06-22 01:39:30,608 INFO ]: Finished removeUnreachable. Reduced from 130 states to 130 states and 286 transitions. [2018-06-22 01:39:30,608 INFO ]: Start accepts. Automaton has 130 states and 286 transitions. Word has length 55 [2018-06-22 01:39:30,609 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:39:30,609 INFO ]: Abstraction has 130 states and 286 transitions. [2018-06-22 01:39:30,609 INFO ]: Interpolant automaton has 12 states. [2018-06-22 01:39:30,609 INFO ]: Start isEmpty. Operand 130 states and 286 transitions. [2018-06-22 01:39:30,618 INFO ]: Finished isEmpty. Found accepting run of length 74 [2018-06-22 01:39:30,619 INFO ]: Found error trace [2018-06-22 01:39:30,622 INFO ]: trace histogram [8, 8, 7, 7, 6, 4, 4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:39:30,622 INFO ]: === Iteration 10 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:39:30,622 INFO ]: Analyzing trace with hash -1570243045, now seen corresponding path program 3 times [2018-06-22 01:39:30,622 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:39:30,622 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:39:30,623 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:39:30,623 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 01:39:30,623 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:39:30,702 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:39:31,422 INFO ]: Checked inductivity of 209 backedges. 54 proven. 10 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2018-06-22 01:39:31,422 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 01:39:31,422 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 01:39:31,437 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-22 01:39:31,510 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2018-06-22 01:39:31,510 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:39:31,515 INFO ]: Computing forward predicates... [2018-06-22 01:39:32,043 INFO ]: Checked inductivity of 209 backedges. 87 proven. 28 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2018-06-22 01:39:32,064 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 01:39:32,064 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 24 [2018-06-22 01:39:32,065 INFO ]: Interpolant automaton has 24 states [2018-06-22 01:39:32,065 INFO ]: Constructing interpolant automaton starting with 24 interpolants. [2018-06-22 01:39:32,066 INFO ]: CoverageRelationStatistics Valid=54, Invalid=498, Unknown=0, NotChecked=0, Total=552 [2018-06-22 01:39:32,067 INFO ]: Start difference. First operand 130 states and 286 transitions. Second operand 24 states. [2018-06-22 01:39:35,236 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:39:35,237 INFO ]: Finished difference Result 304 states and 926 transitions. [2018-06-22 01:39:35,237 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-06-22 01:39:35,237 INFO ]: Start accepts. Automaton has 24 states. Word has length 73 [2018-06-22 01:39:35,237 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:39:35,247 INFO ]: With dead ends: 304 [2018-06-22 01:39:35,247 INFO ]: Without dead ends: 280 [2018-06-22 01:39:35,248 INFO ]: 0 DeclaredPredicates, 126 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 701 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=306, Invalid=2886, Unknown=0, NotChecked=0, Total=3192 [2018-06-22 01:39:35,249 INFO ]: Start minimizeSevpa. Operand 280 states. [2018-06-22 01:39:35,294 INFO ]: Finished minimizeSevpa. Reduced states from 280 to 141. [2018-06-22 01:39:35,294 INFO ]: Start removeUnreachable. Operand 141 states. [2018-06-22 01:39:35,298 INFO ]: Finished removeUnreachable. Reduced from 141 states to 141 states and 314 transitions. [2018-06-22 01:39:35,298 INFO ]: Start accepts. Automaton has 141 states and 314 transitions. Word has length 73 [2018-06-22 01:39:35,299 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:39:35,299 INFO ]: Abstraction has 141 states and 314 transitions. [2018-06-22 01:39:35,299 INFO ]: Interpolant automaton has 24 states. [2018-06-22 01:39:35,299 INFO ]: Start isEmpty. Operand 141 states and 314 transitions. [2018-06-22 01:39:35,306 INFO ]: Finished isEmpty. Found accepting run of length 84 [2018-06-22 01:39:35,306 INFO ]: Found error trace [2018-06-22 01:39:35,307 INFO ]: trace histogram [9, 9, 8, 8, 6, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2018-06-22 01:39:35,307 INFO ]: === Iteration 11 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:39:35,307 INFO ]: Analyzing trace with hash -2058707485, now seen corresponding path program 4 times [2018-06-22 01:39:35,307 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:39:35,307 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:39:35,308 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:39:35,308 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 01:39:35,308 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:39:35,352 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:39:35,606 INFO ]: Checked inductivity of 267 backedges. 76 proven. 16 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2018-06-22 01:39:35,607 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 01:39:35,607 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 01:39:35,617 INFO ]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-06-22 01:39:35,676 INFO ]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-06-22 01:39:35,676 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:39:35,683 INFO ]: Computing forward predicates... [2018-06-22 01:39:36,064 INFO ]: Checked inductivity of 267 backedges. 127 proven. 48 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2018-06-22 01:39:36,085 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 01:39:36,085 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 15] total 24 [2018-06-22 01:39:36,085 INFO ]: Interpolant automaton has 24 states [2018-06-22 01:39:36,085 INFO ]: Constructing interpolant automaton starting with 24 interpolants. [2018-06-22 01:39:36,085 INFO ]: CoverageRelationStatistics Valid=50, Invalid=502, Unknown=0, NotChecked=0, Total=552 [2018-06-22 01:39:36,086 INFO ]: Start difference. First operand 141 states and 314 transitions. Second operand 24 states. [2018-06-22 01:39:40,191 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:39:40,191 INFO ]: Finished difference Result 386 states and 1067 transitions. [2018-06-22 01:39:40,191 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2018-06-22 01:39:40,191 INFO ]: Start accepts. Automaton has 24 states. Word has length 83 [2018-06-22 01:39:40,192 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:39:40,200 INFO ]: With dead ends: 386 [2018-06-22 01:39:40,200 INFO ]: Without dead ends: 284 [2018-06-22 01:39:40,202 INFO ]: 0 DeclaredPredicates, 164 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1434 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=680, Invalid=5020, Unknown=0, NotChecked=0, Total=5700 [2018-06-22 01:39:40,202 INFO ]: Start minimizeSevpa. Operand 284 states. [2018-06-22 01:39:40,235 INFO ]: Finished minimizeSevpa. Reduced states from 284 to 184. [2018-06-22 01:39:40,235 INFO ]: Start removeUnreachable. Operand 184 states. [2018-06-22 01:39:40,239 INFO ]: Finished removeUnreachable. Reduced from 184 states to 184 states and 437 transitions. [2018-06-22 01:39:40,239 INFO ]: Start accepts. Automaton has 184 states and 437 transitions. Word has length 83 [2018-06-22 01:39:40,239 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:39:40,239 INFO ]: Abstraction has 184 states and 437 transitions. [2018-06-22 01:39:40,239 INFO ]: Interpolant automaton has 24 states. [2018-06-22 01:39:40,239 INFO ]: Start isEmpty. Operand 184 states and 437 transitions. [2018-06-22 01:39:40,245 INFO ]: Finished isEmpty. Found accepting run of length 75 [2018-06-22 01:39:40,245 INFO ]: Found error trace [2018-06-22 01:39:40,245 INFO ]: trace histogram [8, 8, 7, 7, 5, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:39:40,245 INFO ]: === Iteration 12 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:39:40,245 INFO ]: Analyzing trace with hash 81769271, now seen corresponding path program 5 times [2018-06-22 01:39:40,245 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:39:40,245 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:39:40,247 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:39:40,247 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 01:39:40,247 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:39:40,284 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:39:40,482 INFO ]: Checked inductivity of 211 backedges. 63 proven. 52 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2018-06-22 01:39:40,482 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 01:39:40,482 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 01:39:40,490 INFO ]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-06-22 01:39:40,540 INFO ]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2018-06-22 01:39:40,540 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:39:40,551 INFO ]: Computing forward predicates... [2018-06-22 01:39:40,839 INFO ]: Checked inductivity of 211 backedges. 98 proven. 39 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2018-06-22 01:39:40,864 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 01:39:40,864 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 20 [2018-06-22 01:39:40,865 INFO ]: Interpolant automaton has 20 states [2018-06-22 01:39:40,865 INFO ]: Constructing interpolant automaton starting with 20 interpolants. [2018-06-22 01:39:40,865 INFO ]: CoverageRelationStatistics Valid=42, Invalid=338, Unknown=0, NotChecked=0, Total=380 [2018-06-22 01:39:40,865 INFO ]: Start difference. First operand 184 states and 437 transitions. Second operand 20 states. [2018-06-22 01:39:41,605 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:39:41,605 INFO ]: Finished difference Result 144 states and 278 transitions. [2018-06-22 01:39:41,606 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-06-22 01:39:41,606 INFO ]: Start accepts. Automaton has 20 states. Word has length 74 [2018-06-22 01:39:41,606 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:39:41,606 INFO ]: With dead ends: 144 [2018-06-22 01:39:41,606 INFO ]: Without dead ends: 0 [2018-06-22 01:39:41,606 INFO ]: 0 DeclaredPredicates, 109 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 258 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=212, Invalid=1348, Unknown=0, NotChecked=0, Total=1560 [2018-06-22 01:39:41,606 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-22 01:39:41,606 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-22 01:39:41,606 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-22 01:39:41,606 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-22 01:39:41,606 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 74 [2018-06-22 01:39:41,606 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:39:41,606 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-22 01:39:41,606 INFO ]: Interpolant automaton has 20 states. [2018-06-22 01:39:41,607 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-22 01:39:41,607 INFO ]: Finished isEmpty. No accepting run. [2018-06-22 01:39:41,610 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 01:39:41 BoogieIcfgContainer [2018-06-22 01:39:41,611 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 01:39:41,611 INFO ]: Toolchain (without parser) took 24002.14 ms. Allocated memory was 308.8 MB in the beginning and 535.8 MB in the end (delta: 227.0 MB). Free memory was 263.2 MB in the beginning and 466.2 MB in the end (delta: -203.0 MB). Peak memory consumption was 24.0 MB. Max. memory is 3.6 GB. [2018-06-22 01:39:41,612 INFO ]: SmtParser took 0.12 ms. Allocated memory is still 308.8 MB. Free memory is still 274.3 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 01:39:41,612 INFO ]: ChcToBoogie took 69.90 ms. Allocated memory is still 308.8 MB. Free memory was 262.2 MB in the beginning and 260.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 01:39:41,613 INFO ]: Boogie Preprocessor took 48.60 ms. Allocated memory is still 308.8 MB. Free memory was 260.2 MB in the beginning and 259.2 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 3.6 GB. [2018-06-22 01:39:41,613 INFO ]: RCFGBuilder took 497.10 ms. Allocated memory is still 308.8 MB. Free memory was 258.2 MB in the beginning and 245.2 MB in the end (delta: 13.0 MB). Peak memory consumption was 13.0 MB. Max. memory is 3.6 GB. [2018-06-22 01:39:41,614 INFO ]: TraceAbstraction took 23376.79 ms. Allocated memory was 308.8 MB in the beginning and 535.8 MB in the end (delta: 227.0 MB). Free memory was 245.2 MB in the beginning and 466.2 MB in the end (delta: -221.0 MB). Peak memory consumption was 6.1 MB. Max. memory is 3.6 GB. [2018-06-22 01:39:41,616 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.12 ms. Allocated memory is still 308.8 MB. Free memory is still 274.3 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 69.90 ms. Allocated memory is still 308.8 MB. Free memory was 262.2 MB in the beginning and 260.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 48.60 ms. Allocated memory is still 308.8 MB. Free memory was 260.2 MB in the beginning and 259.2 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 3.6 GB. * RCFGBuilder took 497.10 ms. Allocated memory is still 308.8 MB. Free memory was 258.2 MB in the beginning and 245.2 MB in the end (delta: 13.0 MB). Peak memory consumption was 13.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 23376.79 ms. Allocated memory was 308.8 MB in the beginning and 535.8 MB in the end (delta: 227.0 MB). Free memory was 245.2 MB in the beginning and 466.2 MB in the end (delta: -221.0 MB). Peak memory consumption was 6.1 MB. Max. memory is 3.6 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [UNKNOWN] : assertion always holds For all program executions holds that assertion always holds at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 22 locations, 1 error locations. SAFE Result, 23.3s OverallTime, 12 OverallIterations, 9 TraceHistogramMax, 15.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 843 SDtfs, 1052 SDslu, 4240 SDs, 0 SdLazy, 10520 SolverSat, 1951 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 10.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 704 GetRequests, 401 SyntacticMatches, 0 SemanticMatches, 303 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3068 ImplicationChecksByTransitivity, 8.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=184occurred in iteration=11, 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: 0.3s AutomataMinimizationTime, 12 MinimizatonAttempts, 532 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 5.8s InterpolantComputationTime, 835 NumberOfCodeBlocks, 809 NumberOfCodeBlocksAsserted, 29 NumberOfCheckSat, 815 ConstructedInterpolants, 0 QuantifiedInterpolants, 106827 SizeOfPredicates, 103 NumberOfNonLiveVariables, 2248 ConjunctsInSsa, 215 ConjunctsInUnsatCore, 20 InterpolantComputations, 4 PerfectInterpolantSequences, 1518/1774 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/a-max.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_01-39-41-629.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/a-max.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_01-39-41-629.csv Received shutdown request...