java -Xss4m -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/mc91_99.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-14921ce [2018-06-25 09:32:40,037 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-25 09:32:40,040 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-25 09:32:40,052 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-25 09:32:40,052 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-25 09:32:40,053 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-25 09:32:40,054 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-25 09:32:40,058 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-25 09:32:40,061 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-25 09:32:40,061 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-25 09:32:40,062 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-25 09:32:40,062 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-25 09:32:40,065 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-25 09:32:40,067 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-25 09:32:40,067 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-25 09:32:40,068 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-25 09:32:40,072 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-25 09:32:40,074 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-25 09:32:40,084 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-25 09:32:40,085 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-25 09:32:40,086 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-25 09:32:40,087 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-25 09:32:40,088 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-25 09:32:40,088 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-25 09:32:40,088 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-25 09:32:40,092 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-25 09:32:40,093 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-25 09:32:40,093 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-25 09:32:40,094 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-25 09:32:40,094 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-25 09:32:40,095 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-25 09:32:40,096 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-25 09:32:40,098 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-25 09:32:40,099 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-25 09:32:40,099 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-25 09:32:40,100 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-25 09:32:40,118 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-25 09:32:40,118 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-25 09:32:40,119 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-25 09:32:40,119 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-25 09:32:40,119 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-06-25 09:32:40,120 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-06-25 09:32:40,120 INFO L133 SettingsManager]: * Create interprocedural compositions=false [2018-06-25 09:32:40,120 INFO L133 SettingsManager]: * Use SBE=true [2018-06-25 09:32:40,120 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-25 09:32:40,120 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-25 09:32:40,121 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-25 09:32:40,123 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-25 09:32:40,123 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-25 09:32:40,123 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-25 09:32:40,123 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-25 09:32:40,123 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-25 09:32:40,124 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-25 09:32:40,124 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-25 09:32:40,124 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-25 09:32:40,124 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-25 09:32:40,124 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-25 09:32:40,126 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-25 09:32:40,127 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-25 09:32:40,169 INFO ]: Repository-Root is: /tmp [2018-06-25 09:32:40,185 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-25 09:32:40,188 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-25 09:32:40,190 INFO ]: Initializing SmtParser... [2018-06-25 09:32:40,190 INFO ]: SmtParser initialized [2018-06-25 09:32:40,191 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/hopv/lia/mochi/mc91_99.smt2 [2018-06-25 09:32:40,192 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 [2018-06-25 09:32:40,272 INFO ]: Executing SMT file /storage/chc-comp/hopv/lia/mochi/mc91_99.smt2 unknown [2018-06-25 09:32:40,419 INFO ]: Succesfully executed SMT file /storage/chc-comp/hopv/lia/mochi/mc91_99.smt2 [2018-06-25 09:32:40,424 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-25 09:32:40,431 INFO ]: Walking toolchain with 4 elements. [2018-06-25 09:32:40,432 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-25 09:32:40,432 INFO ]: Initializing ChcToBoogie... [2018-06-25 09:32:40,432 INFO ]: ChcToBoogie initialized [2018-06-25 09:32:40,435 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 25.06 09:32:40" (1/1) ... [2018-06-25 09:32:40,492 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 09:32:40 Unit [2018-06-25 09:32:40,493 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-25 09:32:40,494 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-25 09:32:40,494 INFO ]: Initializing Boogie Preprocessor... [2018-06-25 09:32:40,494 INFO ]: Boogie Preprocessor initialized [2018-06-25 09:32:40,516 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 09:32:40" (1/1) ... [2018-06-25 09:32:40,516 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 09:32:40" (1/1) ... [2018-06-25 09:32:40,521 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 09:32:40" (1/1) ... [2018-06-25 09:32:40,521 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 09:32:40" (1/1) ... [2018-06-25 09:32:40,524 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 09:32:40" (1/1) ... [2018-06-25 09:32:40,527 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 09:32:40" (1/1) ... [2018-06-25 09:32:40,528 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 09:32:40" (1/1) ... [2018-06-25 09:32:40,529 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-25 09:32:40,530 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-25 09:32:40,530 INFO ]: Initializing RCFGBuilder... [2018-06-25 09:32:40,530 INFO ]: RCFGBuilder initialized [2018-06-25 09:32:40,531 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 09:32:40" (1/1) ... No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2018-06-25 09:32:40,546 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-25 09:32:40,546 INFO ]: Found specification of procedure gotoProc [2018-06-25 09:32:40,546 INFO ]: Found implementation of procedure gotoProc [2018-06-25 09:32:40,546 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-25 09:32:40,546 INFO ]: Found specification of procedure Ultimate.START [2018-06-25 09:32:40,546 INFO ]: Found implementation of procedure Ultimate.START Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-25 09:32:40,771 INFO ]: Using library mode [2018-06-25 09:32:40,772 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.06 09:32:40 BoogieIcfgContainer [2018-06-25 09:32:40,772 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-25 09:32:40,775 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-25 09:32:40,775 INFO ]: Initializing TraceAbstraction... [2018-06-25 09:32:40,778 INFO ]: TraceAbstraction initialized [2018-06-25 09:32:40,778 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 25.06 09:32:40" (1/3) ... [2018-06-25 09:32:40,780 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a1a1a6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 25.06 09:32:40, skipping insertion in model container [2018-06-25 09:32:40,780 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 09:32:40" (2/3) ... [2018-06-25 09:32:40,780 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a1a1a6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.06 09:32:40, skipping insertion in model container [2018-06-25 09:32:40,780 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.06 09:32:40" (3/3) ... [2018-06-25 09:32:40,782 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-25 09:32:40,795 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-25 09:32:40,811 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-25 09:32:40,873 INFO ]: Using default assertion order modulation [2018-06-25 09:32:40,874 INFO ]: Interprodecural is true [2018-06-25 09:32:40,874 INFO ]: Hoare is false [2018-06-25 09:32:40,874 INFO ]: Compute interpolants for FPandBP [2018-06-25 09:32:40,874 INFO ]: Backedges is TWOTRACK [2018-06-25 09:32:40,874 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-25 09:32:40,874 INFO ]: Difference is false [2018-06-25 09:32:40,874 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-25 09:32:40,874 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-25 09:32:40,892 INFO ]: Start isEmpty. Operand 13 states. [2018-06-25 09:32:40,904 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-25 09:32:40,906 INFO ]: Found error trace [2018-06-25 09:32:40,907 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-06-25 09:32:40,907 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 09:32:40,913 INFO ]: Analyzing trace with hash -948571817, now seen corresponding path program 1 times [2018-06-25 09:32:40,915 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 09:32:40,915 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 09:32:40,955 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:32:40,955 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 09:32:40,955 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:32:40,983 INFO ]: Conjunction of SSA is unsat [2018-06-25 09:32:41,055 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 09:32:41,057 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-25 09:32:41,057 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-25 09:32:41,059 INFO ]: Interpolant automaton has 4 states [2018-06-25 09:32:41,069 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-25 09:32:41,069 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-25 09:32:41,071 INFO ]: Start difference. First operand 13 states. Second operand 4 states. [2018-06-25 09:32:41,249 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 09:32:41,249 INFO ]: Finished difference Result 19 states and 23 transitions. [2018-06-25 09:32:41,250 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-25 09:32:41,251 INFO ]: Start accepts. Automaton has 4 states. Word has length 7 [2018-06-25 09:32:41,251 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 09:32:41,260 INFO ]: With dead ends: 19 [2018-06-25 09:32:41,260 INFO ]: Without dead ends: 19 [2018-06-25 09:32:41,262 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 [2018-06-25 09:32:41,278 INFO ]: Start minimizeSevpa. Operand 19 states. [2018-06-25 09:32:41,296 INFO ]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-06-25 09:32:41,297 INFO ]: Start removeUnreachable. Operand 19 states. [2018-06-25 09:32:41,298 INFO ]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2018-06-25 09:32:41,299 INFO ]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 7 [2018-06-25 09:32:41,302 INFO ]: Finished accepts. word is rejected. [2018-06-25 09:32:41,302 INFO ]: Abstraction has 19 states and 23 transitions. [2018-06-25 09:32:41,302 INFO ]: Interpolant automaton has 4 states. [2018-06-25 09:32:41,302 INFO ]: Start isEmpty. Operand 19 states and 23 transitions. [2018-06-25 09:32:41,304 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-25 09:32:41,304 INFO ]: Found error trace [2018-06-25 09:32:41,304 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 09:32:41,304 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 09:32:41,304 INFO ]: Analyzing trace with hash 708877607, now seen corresponding path program 1 times [2018-06-25 09:32:41,304 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 09:32:41,304 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 09:32:41,306 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:32:41,306 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 09:32:41,306 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:32:41,314 INFO ]: Conjunction of SSA is unsat [2018-06-25 09:32:41,351 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 09:32:41,351 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-25 09:32:41,351 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-25 09:32:41,353 INFO ]: Interpolant automaton has 3 states [2018-06-25 09:32:41,353 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-25 09:32:41,353 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-25 09:32:41,353 INFO ]: Start difference. First operand 19 states and 23 transitions. Second operand 3 states. [2018-06-25 09:32:41,383 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 09:32:41,384 INFO ]: Finished difference Result 25 states and 31 transitions. [2018-06-25 09:32:41,384 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-25 09:32:41,384 INFO ]: Start accepts. Automaton has 3 states. Word has length 8 [2018-06-25 09:32:41,384 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 09:32:41,385 INFO ]: With dead ends: 25 [2018-06-25 09:32:41,385 INFO ]: Without dead ends: 25 [2018-06-25 09:32:41,386 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 [2018-06-25 09:32:41,386 INFO ]: Start minimizeSevpa. Operand 25 states. [2018-06-25 09:32:41,391 INFO ]: Finished minimizeSevpa. Reduced states from 25 to 21. [2018-06-25 09:32:41,391 INFO ]: Start removeUnreachable. Operand 21 states. [2018-06-25 09:32:41,392 INFO ]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2018-06-25 09:32:41,392 INFO ]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 8 [2018-06-25 09:32:41,392 INFO ]: Finished accepts. word is rejected. [2018-06-25 09:32:41,392 INFO ]: Abstraction has 21 states and 25 transitions. [2018-06-25 09:32:41,392 INFO ]: Interpolant automaton has 3 states. [2018-06-25 09:32:41,392 INFO ]: Start isEmpty. Operand 21 states and 25 transitions. [2018-06-25 09:32:41,393 INFO ]: Finished isEmpty. Found accepting run of length 17 [2018-06-25 09:32:41,393 INFO ]: Found error trace [2018-06-25 09:32:41,393 INFO ]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 09:32:41,393 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 09:32:41,393 INFO ]: Analyzing trace with hash 2019645580, now seen corresponding path program 1 times [2018-06-25 09:32:41,393 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 09:32:41,393 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 09:32:41,394 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:32:41,394 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 09:32:41,394 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:32:41,417 INFO ]: Conjunction of SSA is unsat [2018-06-25 09:32:41,700 INFO ]: Checked inductivity of 7 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-06-25 09:32:41,700 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-25 09:32:41,700 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 [2018-06-25 09:32:41,707 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 09:32:41,752 INFO ]: Conjunction of SSA is unsat [2018-06-25 09:32:41,761 INFO ]: Computing forward predicates... [2018-06-25 09:32:42,103 INFO ]: Checked inductivity of 7 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-06-25 09:32:42,125 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-25 09:32:42,125 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2018-06-25 09:32:42,125 INFO ]: Interpolant automaton has 13 states [2018-06-25 09:32:42,125 INFO ]: Constructing interpolant automaton starting with 13 interpolants. [2018-06-25 09:32:42,125 INFO ]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2018-06-25 09:32:42,125 INFO ]: Start difference. First operand 21 states and 25 transitions. Second operand 13 states. [2018-06-25 09:32:42,644 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 09:32:42,644 INFO ]: Finished difference Result 34 states and 46 transitions. [2018-06-25 09:32:42,645 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-06-25 09:32:42,645 INFO ]: Start accepts. Automaton has 13 states. Word has length 16 [2018-06-25 09:32:42,645 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 09:32:42,648 INFO ]: With dead ends: 34 [2018-06-25 09:32:42,648 INFO ]: Without dead ends: 34 [2018-06-25 09:32:42,648 INFO ]: 0 DeclaredPredicates, 28 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=67, Invalid=239, Unknown=0, NotChecked=0, Total=306 [2018-06-25 09:32:42,649 INFO ]: Start minimizeSevpa. Operand 34 states. [2018-06-25 09:32:42,654 INFO ]: Finished minimizeSevpa. Reduced states from 34 to 30. [2018-06-25 09:32:42,654 INFO ]: Start removeUnreachable. Operand 30 states. [2018-06-25 09:32:42,656 INFO ]: Finished removeUnreachable. Reduced from 30 states to 30 states and 40 transitions. [2018-06-25 09:32:42,656 INFO ]: Start accepts. Automaton has 30 states and 40 transitions. Word has length 16 [2018-06-25 09:32:42,656 INFO ]: Finished accepts. word is rejected. [2018-06-25 09:32:42,656 INFO ]: Abstraction has 30 states and 40 transitions. [2018-06-25 09:32:42,656 INFO ]: Interpolant automaton has 13 states. [2018-06-25 09:32:42,656 INFO ]: Start isEmpty. Operand 30 states and 40 transitions. [2018-06-25 09:32:42,657 INFO ]: Finished isEmpty. Found accepting run of length 25 [2018-06-25 09:32:42,657 INFO ]: Found error trace [2018-06-25 09:32:42,657 INFO ]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2018-06-25 09:32:42,657 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 09:32:42,657 INFO ]: Analyzing trace with hash -885179279, now seen corresponding path program 2 times [2018-06-25 09:32:42,657 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 09:32:42,657 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 09:32:42,658 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:32:42,658 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 09:32:42,658 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:32:42,673 INFO ]: Conjunction of SSA is unsat [2018-06-25 09:32:43,008 INFO ]: Checked inductivity of 24 backedges. 11 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-06-25 09:32:43,009 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-25 09:32:43,009 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 [2018-06-25 09:32:43,015 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-25 09:32:43,041 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-25 09:32:43,041 INFO ]: Conjunction of SSA is unsat [2018-06-25 09:32:43,043 INFO ]: Computing forward predicates... [2018-06-25 09:32:43,237 INFO ]: Checked inductivity of 24 backedges. 11 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-06-25 09:32:43,256 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-25 09:32:43,256 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 16 [2018-06-25 09:32:43,257 INFO ]: Interpolant automaton has 16 states [2018-06-25 09:32:43,257 INFO ]: Constructing interpolant automaton starting with 16 interpolants. [2018-06-25 09:32:43,257 INFO ]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2018-06-25 09:32:43,257 INFO ]: Start difference. First operand 30 states and 40 transitions. Second operand 16 states. [2018-06-25 09:32:44,574 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 09:32:44,574 INFO ]: Finished difference Result 77 states and 129 transitions. [2018-06-25 09:32:44,574 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-06-25 09:32:44,575 INFO ]: Start accepts. Automaton has 16 states. Word has length 24 [2018-06-25 09:32:44,575 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 09:32:44,577 INFO ]: With dead ends: 77 [2018-06-25 09:32:44,577 INFO ]: Without dead ends: 59 [2018-06-25 09:32:44,578 INFO ]: 0 DeclaredPredicates, 71 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 456 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=451, Invalid=1619, Unknown=0, NotChecked=0, Total=2070 [2018-06-25 09:32:44,578 INFO ]: Start minimizeSevpa. Operand 59 states. [2018-06-25 09:32:44,591 INFO ]: Finished minimizeSevpa. Reduced states from 59 to 39. [2018-06-25 09:32:44,591 INFO ]: Start removeUnreachable. Operand 39 states. [2018-06-25 09:32:44,592 INFO ]: Finished removeUnreachable. Reduced from 39 states to 39 states and 56 transitions. [2018-06-25 09:32:44,592 INFO ]: Start accepts. Automaton has 39 states and 56 transitions. Word has length 24 [2018-06-25 09:32:44,593 INFO ]: Finished accepts. word is rejected. [2018-06-25 09:32:44,593 INFO ]: Abstraction has 39 states and 56 transitions. [2018-06-25 09:32:44,593 INFO ]: Interpolant automaton has 16 states. [2018-06-25 09:32:44,593 INFO ]: Start isEmpty. Operand 39 states and 56 transitions. [2018-06-25 09:32:44,594 INFO ]: Finished isEmpty. Found accepting run of length 25 [2018-06-25 09:32:44,594 INFO ]: Found error trace [2018-06-25 09:32:44,594 INFO ]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2018-06-25 09:32:44,595 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 09:32:44,595 INFO ]: Analyzing trace with hash 580312817, now seen corresponding path program 3 times [2018-06-25 09:32:44,595 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 09:32:44,595 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 09:32:44,596 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:32:44,596 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-25 09:32:44,596 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:32:44,613 INFO ]: Conjunction of SSA is unsat [2018-06-25 09:32:44,725 INFO ]: Checked inductivity of 24 backedges. 9 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-06-25 09:32:44,726 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-25 09:32:44,726 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 [2018-06-25 09:32:44,743 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-25 09:32:44,795 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-06-25 09:32:44,795 INFO ]: Conjunction of SSA is unsat [2018-06-25 09:32:44,798 INFO ]: Computing forward predicates... [2018-06-25 09:32:44,927 INFO ]: Checked inductivity of 24 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-06-25 09:32:44,961 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-25 09:32:44,961 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11] total 17 [2018-06-25 09:32:44,962 INFO ]: Interpolant automaton has 17 states [2018-06-25 09:32:44,962 INFO ]: Constructing interpolant automaton starting with 17 interpolants. [2018-06-25 09:32:44,962 INFO ]: CoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2018-06-25 09:32:44,962 INFO ]: Start difference. First operand 39 states and 56 transitions. Second operand 17 states. [2018-06-25 09:32:45,143 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 09:32:45,144 INFO ]: Finished difference Result 40 states and 53 transitions. [2018-06-25 09:32:45,144 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-06-25 09:32:45,144 INFO ]: Start accepts. Automaton has 17 states. Word has length 24 [2018-06-25 09:32:45,145 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 09:32:45,145 INFO ]: With dead ends: 40 [2018-06-25 09:32:45,145 INFO ]: Without dead ends: 0 [2018-06-25 09:32:45,145 INFO ]: 0 DeclaredPredicates, 39 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=111, Invalid=395, Unknown=0, NotChecked=0, Total=506 [2018-06-25 09:32:45,145 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-25 09:32:45,146 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-25 09:32:45,146 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-25 09:32:45,146 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-25 09:32:45,146 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 24 [2018-06-25 09:32:45,146 INFO ]: Finished accepts. word is rejected. [2018-06-25 09:32:45,146 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-25 09:32:45,146 INFO ]: Interpolant automaton has 17 states. [2018-06-25 09:32:45,146 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-25 09:32:45,146 INFO ]: Finished isEmpty. No accepting run. [2018-06-25 09:32:45,152 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.06 09:32:45 BoogieIcfgContainer [2018-06-25 09:32:45,152 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-25 09:32:45,153 INFO ]: Toolchain (without parser) took 4728.71 ms. Allocated memory was 306.7 MB in the beginning and 338.7 MB in the end (delta: 32.0 MB). Free memory was 264.1 MB in the beginning and 183.6 MB in the end (delta: 80.5 MB). Peak memory consumption was 112.5 MB. Max. memory is 3.6 GB. [2018-06-25 09:32:45,155 INFO ]: SmtParser took 0.07 ms. Allocated memory is still 306.7 MB. Free memory is still 272.2 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-25 09:32:45,155 INFO ]: ChcToBoogie took 61.54 ms. Allocated memory is still 306.7 MB. Free memory was 263.1 MB in the beginning and 261.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-25 09:32:45,157 INFO ]: Boogie Preprocessor took 35.56 ms. Allocated memory is still 306.7 MB. Free memory was 261.1 MB in the beginning and 260.0 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 3.6 GB. [2018-06-25 09:32:45,157 INFO ]: RCFGBuilder took 242.02 ms. Allocated memory is still 306.7 MB. Free memory was 260.0 MB in the beginning and 253.0 MB in the end (delta: 7.0 MB). Peak memory consumption was 7.0 MB. Max. memory is 3.6 GB. [2018-06-25 09:32:45,158 INFO ]: TraceAbstraction took 4377.17 ms. Allocated memory was 306.7 MB in the beginning and 338.7 MB in the end (delta: 32.0 MB). Free memory was 253.0 MB in the beginning and 183.6 MB in the end (delta: 69.5 MB). Peak memory consumption was 101.4 MB. Max. memory is 3.6 GB. [2018-06-25 09:32:45,166 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.07 ms. Allocated memory is still 306.7 MB. Free memory is still 272.2 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 61.54 ms. Allocated memory is still 306.7 MB. Free memory was 263.1 MB in the beginning and 261.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 35.56 ms. Allocated memory is still 306.7 MB. Free memory was 261.1 MB in the beginning and 260.0 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 3.6 GB. * RCFGBuilder took 242.02 ms. Allocated memory is still 306.7 MB. Free memory was 260.0 MB in the beginning and 253.0 MB in the end (delta: 7.0 MB). Peak memory consumption was 7.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 4377.17 ms. Allocated memory was 306.7 MB in the beginning and 338.7 MB in the end (delta: 32.0 MB). Free memory was 253.0 MB in the beginning and 183.6 MB in the end (delta: 69.5 MB). Peak memory consumption was 101.4 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, 13 locations, 1 error locations. SAFE Result, 4.2s OverallTime, 5 OverallIterations, 3 TraceHistogramMax, 2.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 56 SDtfs, 88 SDslu, 172 SDs, 0 SdLazy, 538 SolverSat, 189 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 146 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 541 ImplicationChecksByTransitivity, 2.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=39occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 28 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 143 NumberOfCodeBlocks, 143 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 135 ConstructedInterpolants, 0 QuantifiedInterpolants, 8832 SizeOfPredicates, 29 NumberOfNonLiveVariables, 252 ConjunctsInSsa, 64 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 71/110 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/mc91_99.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-25_09-32-45-182.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/mc91_99.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-25_09-32-45-182.csv Received shutdown request...