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/termination/McCarthy9102.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-14921ce [2018-06-25 09:38:50,909 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-25 09:38:50,915 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-25 09:38:50,930 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-25 09:38:50,930 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-25 09:38:50,931 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-25 09:38:50,932 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-25 09:38:50,934 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-25 09:38:50,936 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-25 09:38:50,936 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-25 09:38:50,938 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-25 09:38:50,938 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-25 09:38:50,939 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-25 09:38:50,940 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-25 09:38:50,943 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-25 09:38:50,944 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-25 09:38:50,946 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-25 09:38:50,955 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-25 09:38:50,957 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-25 09:38:50,958 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-25 09:38:50,965 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-25 09:38:50,967 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-25 09:38:50,968 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-25 09:38:50,968 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-25 09:38:50,969 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-25 09:38:50,970 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-25 09:38:50,970 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-25 09:38:50,971 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-25 09:38:50,978 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-25 09:38:50,978 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-25 09:38:50,979 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-25 09:38:50,979 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-25 09:38:50,980 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-25 09:38:50,980 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-25 09:38:50,981 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-25 09:38:50,981 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-25 09:38:50,995 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-25 09:38:50,995 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-25 09:38:50,995 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-25 09:38:50,995 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-25 09:38:50,996 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-06-25 09:38:50,996 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-06-25 09:38:50,997 INFO L133 SettingsManager]: * Create interprocedural compositions=false [2018-06-25 09:38:50,997 INFO L133 SettingsManager]: * Use SBE=true [2018-06-25 09:38:50,997 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-25 09:38:50,997 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-25 09:38:50,997 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-25 09:38:50,998 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-25 09:38:50,998 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-25 09:38:50,998 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-25 09:38:50,998 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-25 09:38:50,998 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-25 09:38:50,998 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-25 09:38:50,999 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-25 09:38:50,999 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-25 09:38:50,999 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-25 09:38:50,999 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-25 09:38:51,000 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-25 09:38:51,001 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-25 09:38:51,043 INFO ]: Repository-Root is: /tmp [2018-06-25 09:38:51,056 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-25 09:38:51,060 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-25 09:38:51,061 INFO ]: Initializing SmtParser... [2018-06-25 09:38:51,061 INFO ]: SmtParser initialized [2018-06-25 09:38:51,062 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/hopv/lia/termination/McCarthy9102.smt2 [2018-06-25 09:38:51,063 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 09:38:51,151 INFO ]: Executing SMT file /storage/chc-comp/hopv/lia/termination/McCarthy9102.smt2 unknown [2018-06-25 09:38:51,508 INFO ]: Succesfully executed SMT file /storage/chc-comp/hopv/lia/termination/McCarthy9102.smt2 [2018-06-25 09:38:51,518 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-25 09:38:51,524 INFO ]: Walking toolchain with 4 elements. [2018-06-25 09:38:51,525 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-25 09:38:51,525 INFO ]: Initializing ChcToBoogie... [2018-06-25 09:38:51,525 INFO ]: ChcToBoogie initialized [2018-06-25 09:38:51,528 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 25.06 09:38:51" (1/1) ... [2018-06-25 09:38:51,590 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 09:38:51 Unit [2018-06-25 09:38:51,590 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-25 09:38:51,590 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-25 09:38:51,590 INFO ]: Initializing Boogie Preprocessor... [2018-06-25 09:38:51,590 INFO ]: Boogie Preprocessor initialized [2018-06-25 09:38:51,611 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 09:38:51" (1/1) ... [2018-06-25 09:38:51,611 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 09:38:51" (1/1) ... [2018-06-25 09:38:51,619 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 09:38:51" (1/1) ... [2018-06-25 09:38:51,619 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 09:38:51" (1/1) ... [2018-06-25 09:38:51,636 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 09:38:51" (1/1) ... [2018-06-25 09:38:51,648 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 09:38:51" (1/1) ... [2018-06-25 09:38:51,650 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 09:38:51" (1/1) ... [2018-06-25 09:38:51,652 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-25 09:38:51,653 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-25 09:38:51,653 INFO ]: Initializing RCFGBuilder... [2018-06-25 09:38:51,653 INFO ]: RCFGBuilder initialized [2018-06-25 09:38:51,653 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 09:38:51" (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 [2018-06-25 09:38:51,672 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-25 09:38:51,672 INFO ]: Found specification of procedure gotoProc [2018-06-25 09:38:51,672 INFO ]: Found implementation of procedure gotoProc [2018-06-25 09:38:51,672 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-25 09:38:51,672 INFO ]: Found specification of procedure Ultimate.START [2018-06-25 09:38:51,672 INFO ]: Found implementation of procedure Ultimate.START [2018-06-25 09:38:52,183 INFO ]: Using library mode [2018-06-25 09:38:52,184 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.06 09:38:52 BoogieIcfgContainer [2018-06-25 09:38:52,184 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-25 09:38:52,185 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-25 09:38:52,185 INFO ]: Initializing TraceAbstraction... [2018-06-25 09:38:52,188 INFO ]: TraceAbstraction initialized [2018-06-25 09:38:52,188 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 25.06 09:38:51" (1/3) ... [2018-06-25 09:38:52,189 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@581abc7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 25.06 09:38:52, skipping insertion in model container [2018-06-25 09:38:52,189 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 09:38:51" (2/3) ... [2018-06-25 09:38:52,189 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@581abc7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.06 09:38:52, skipping insertion in model container [2018-06-25 09:38:52,190 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.06 09:38:52" (3/3) ... [2018-06-25 09:38:52,191 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-25 09:38:52,199 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-25 09:38:52,207 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-25 09:38:52,252 INFO ]: Using default assertion order modulation [2018-06-25 09:38:52,253 INFO ]: Interprodecural is true [2018-06-25 09:38:52,253 INFO ]: Hoare is false [2018-06-25 09:38:52,253 INFO ]: Compute interpolants for FPandBP [2018-06-25 09:38:52,253 INFO ]: Backedges is TWOTRACK [2018-06-25 09:38:52,253 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-25 09:38:52,253 INFO ]: Difference is false [2018-06-25 09:38:52,253 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-25 09:38:52,253 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-25 09:38:52,267 INFO ]: Start isEmpty. Operand 45 states. [2018-06-25 09:38:52,282 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-25 09:38:52,282 INFO ]: Found error trace [2018-06-25 09:38:52,283 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 09:38:52,283 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 09:38:52,287 INFO ]: Analyzing trace with hash 373217743, now seen corresponding path program 1 times [2018-06-25 09:38:52,289 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 09:38:52,289 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 09:38:52,321 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:38:52,321 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 09:38:52,321 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:38:52,346 INFO ]: Conjunction of SSA is unsat [2018-06-25 09:38:52,390 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 09:38:52,392 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-25 09:38:52,392 INFO ]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-06-25 09:38:52,394 INFO ]: Interpolant automaton has 2 states [2018-06-25 09:38:52,404 INFO ]: Constructing interpolant automaton starting with 2 interpolants. [2018-06-25 09:38:52,405 INFO ]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-06-25 09:38:52,406 INFO ]: Start difference. First operand 45 states. Second operand 2 states. [2018-06-25 09:38:52,433 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 09:38:52,433 INFO ]: Finished difference Result 43 states and 67 transitions. [2018-06-25 09:38:52,433 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-06-25 09:38:52,438 INFO ]: Start accepts. Automaton has 2 states. Word has length 9 [2018-06-25 09:38:52,438 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 09:38:52,448 INFO ]: With dead ends: 43 [2018-06-25 09:38:52,448 INFO ]: Without dead ends: 34 [2018-06-25 09:38:52,450 INFO ]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-06-25 09:38:52,462 INFO ]: Start minimizeSevpa. Operand 34 states. [2018-06-25 09:38:52,490 INFO ]: Finished minimizeSevpa. Reduced states from 34 to 34. [2018-06-25 09:38:52,491 INFO ]: Start removeUnreachable. Operand 34 states. [2018-06-25 09:38:52,498 INFO ]: Finished removeUnreachable. Reduced from 34 states to 34 states and 51 transitions. [2018-06-25 09:38:52,499 INFO ]: Start accepts. Automaton has 34 states and 51 transitions. Word has length 9 [2018-06-25 09:38:52,501 INFO ]: Finished accepts. word is rejected. [2018-06-25 09:38:52,501 INFO ]: Abstraction has 34 states and 51 transitions. [2018-06-25 09:38:52,501 INFO ]: Interpolant automaton has 2 states. [2018-06-25 09:38:52,501 INFO ]: Start isEmpty. Operand 34 states and 51 transitions. [2018-06-25 09:38:52,503 INFO ]: Finished isEmpty. Found accepting run of length 12 [2018-06-25 09:38:52,503 INFO ]: Found error trace [2018-06-25 09:38:52,503 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 09:38:52,504 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 09:38:52,504 INFO ]: Analyzing trace with hash -1818191772, now seen corresponding path program 1 times [2018-06-25 09:38:52,504 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 09:38:52,504 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 09:38:52,506 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:38:52,506 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 09:38:52,506 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:38:52,517 INFO ]: Conjunction of SSA is unsat [2018-06-25 09:38:52,621 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 09:38:52,621 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-25 09:38:52,621 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-25 09:38:52,623 INFO ]: Interpolant automaton has 4 states [2018-06-25 09:38:52,623 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-25 09:38:52,623 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-25 09:38:52,623 INFO ]: Start difference. First operand 34 states and 51 transitions. Second operand 4 states. [2018-06-25 09:38:53,098 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 09:38:53,098 INFO ]: Finished difference Result 57 states and 86 transitions. [2018-06-25 09:38:53,099 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-25 09:38:53,099 INFO ]: Start accepts. Automaton has 4 states. Word has length 11 [2018-06-25 09:38:53,099 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 09:38:53,102 INFO ]: With dead ends: 57 [2018-06-25 09:38:53,102 INFO ]: Without dead ends: 57 [2018-06-25 09:38:53,102 INFO ]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-06-25 09:38:53,103 INFO ]: Start minimizeSevpa. Operand 57 states. [2018-06-25 09:38:53,113 INFO ]: Finished minimizeSevpa. Reduced states from 57 to 57. [2018-06-25 09:38:53,113 INFO ]: Start removeUnreachable. Operand 57 states. [2018-06-25 09:38:53,115 INFO ]: Finished removeUnreachable. Reduced from 57 states to 57 states and 86 transitions. [2018-06-25 09:38:53,115 INFO ]: Start accepts. Automaton has 57 states and 86 transitions. Word has length 11 [2018-06-25 09:38:53,115 INFO ]: Finished accepts. word is rejected. [2018-06-25 09:38:53,115 INFO ]: Abstraction has 57 states and 86 transitions. [2018-06-25 09:38:53,115 INFO ]: Interpolant automaton has 4 states. [2018-06-25 09:38:53,115 INFO ]: Start isEmpty. Operand 57 states and 86 transitions. [2018-06-25 09:38:53,117 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-25 09:38:53,117 INFO ]: Found error trace [2018-06-25 09:38:53,117 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 09:38:53,117 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 09:38:53,117 INFO ]: Analyzing trace with hash 1768082609, now seen corresponding path program 1 times [2018-06-25 09:38:53,117 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 09:38:53,117 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 09:38:53,118 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:38:53,118 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 09:38:53,118 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:38:53,128 INFO ]: Conjunction of SSA is unsat [2018-06-25 09:38:53,176 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 09:38:53,176 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-25 09:38:53,176 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-25 09:38:53,176 INFO ]: Interpolant automaton has 4 states [2018-06-25 09:38:53,177 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-25 09:38:53,177 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-25 09:38:53,177 INFO ]: Start difference. First operand 57 states and 86 transitions. Second operand 4 states. [2018-06-25 09:38:53,490 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 09:38:53,490 INFO ]: Finished difference Result 71 states and 107 transitions. [2018-06-25 09:38:53,491 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-25 09:38:53,491 INFO ]: Start accepts. Automaton has 4 states. Word has length 13 [2018-06-25 09:38:53,491 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 09:38:53,493 INFO ]: With dead ends: 71 [2018-06-25 09:38:53,493 INFO ]: Without dead ends: 57 [2018-06-25 09:38:53,493 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 09:38:53,494 INFO ]: Start minimizeSevpa. Operand 57 states. [2018-06-25 09:38:53,501 INFO ]: Finished minimizeSevpa. Reduced states from 57 to 57. [2018-06-25 09:38:53,501 INFO ]: Start removeUnreachable. Operand 57 states. [2018-06-25 09:38:53,503 INFO ]: Finished removeUnreachable. Reduced from 57 states to 57 states and 85 transitions. [2018-06-25 09:38:53,503 INFO ]: Start accepts. Automaton has 57 states and 85 transitions. Word has length 13 [2018-06-25 09:38:53,503 INFO ]: Finished accepts. word is rejected. [2018-06-25 09:38:53,503 INFO ]: Abstraction has 57 states and 85 transitions. [2018-06-25 09:38:53,503 INFO ]: Interpolant automaton has 4 states. [2018-06-25 09:38:53,503 INFO ]: Start isEmpty. Operand 57 states and 85 transitions. [2018-06-25 09:38:53,505 INFO ]: Finished isEmpty. Found accepting run of length 16 [2018-06-25 09:38:53,505 INFO ]: Found error trace [2018-06-25 09:38:53,505 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 09:38:53,505 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 09:38:53,506 INFO ]: Analyzing trace with hash 2032252301, now seen corresponding path program 1 times [2018-06-25 09:38:53,506 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 09:38:53,506 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 09:38:53,506 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:38:53,506 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 09:38:53,506 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:38:53,527 INFO ]: Conjunction of SSA is unsat [2018-06-25 09:38:53,710 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 09:38:53,711 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-25 09:38:53,711 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-25 09:38:53,711 INFO ]: Interpolant automaton has 3 states [2018-06-25 09:38:53,711 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-25 09:38:53,711 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-25 09:38:53,711 INFO ]: Start difference. First operand 57 states and 85 transitions. Second operand 3 states. [2018-06-25 09:38:53,797 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 09:38:53,797 INFO ]: Finished difference Result 43 states and 62 transitions. [2018-06-25 09:38:53,797 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-25 09:38:53,797 INFO ]: Start accepts. Automaton has 3 states. Word has length 15 [2018-06-25 09:38:53,797 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 09:38:53,797 INFO ]: With dead ends: 43 [2018-06-25 09:38:53,797 INFO ]: Without dead ends: 0 [2018-06-25 09:38:53,798 INFO ]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-25 09:38:53,798 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-25 09:38:53,798 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-25 09:38:53,798 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-25 09:38:53,798 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-25 09:38:53,798 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2018-06-25 09:38:53,798 INFO ]: Finished accepts. word is rejected. [2018-06-25 09:38:53,798 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-25 09:38:53,798 INFO ]: Interpolant automaton has 3 states. [2018-06-25 09:38:53,798 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-25 09:38:53,798 INFO ]: Finished isEmpty. No accepting run. [2018-06-25 09:38:53,805 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.06 09:38:53 BoogieIcfgContainer [2018-06-25 09:38:53,805 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-25 09:38:53,806 INFO ]: Toolchain (without parser) took 2287.53 ms. Allocated memory was 303.0 MB in the beginning and 325.1 MB in the end (delta: 22.0 MB). Free memory was 251.5 MB in the beginning and 273.7 MB in the end (delta: -22.3 MB). There was no memory consumed. Max. memory is 3.6 GB. [2018-06-25 09:38:53,807 INFO ]: SmtParser took 0.08 ms. Allocated memory is still 303.0 MB. Free memory is still 267.5 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-25 09:38:53,808 INFO ]: ChcToBoogie took 65.35 ms. Allocated memory is still 303.0 MB. Free memory was 251.5 MB in the beginning and 249.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-25 09:38:53,808 INFO ]: Boogie Preprocessor took 61.89 ms. Allocated memory is still 303.0 MB. Free memory was 249.5 MB in the beginning and 247.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-25 09:38:53,809 INFO ]: RCFGBuilder took 531.01 ms. Allocated memory is still 303.0 MB. Free memory was 247.5 MB in the beginning and 227.5 MB in the end (delta: 20.0 MB). Peak memory consumption was 20.0 MB. Max. memory is 3.6 GB. [2018-06-25 09:38:53,809 INFO ]: TraceAbstraction took 1619.83 ms. Allocated memory was 303.0 MB in the beginning and 325.1 MB in the end (delta: 22.0 MB). Free memory was 225.5 MB in the beginning and 273.7 MB in the end (delta: -48.2 MB). There was no memory consumed. Max. memory is 3.6 GB. [2018-06-25 09:38:53,812 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.08 ms. Allocated memory is still 303.0 MB. Free memory is still 267.5 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 65.35 ms. Allocated memory is still 303.0 MB. Free memory was 251.5 MB in the beginning and 249.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 61.89 ms. Allocated memory is still 303.0 MB. Free memory was 249.5 MB in the beginning and 247.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 531.01 ms. Allocated memory is still 303.0 MB. Free memory was 247.5 MB in the beginning and 227.5 MB in the end (delta: 20.0 MB). Peak memory consumption was 20.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 1619.83 ms. Allocated memory was 303.0 MB in the beginning and 325.1 MB in the end (delta: 22.0 MB). Free memory was 225.5 MB in the beginning and 273.7 MB in the end (delta: -48.2 MB). There was no memory consumed. 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, 45 locations, 1 error locations. SAFE Result, 1.5s OverallTime, 4 OverallIterations, 1 TraceHistogramMax, 0.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 184 SDtfs, 127 SDslu, 76 SDs, 0 SdLazy, 125 SolverSat, 63 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=57occurred in iteration=2, 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, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 48 NumberOfCodeBlocks, 48 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 44 ConstructedInterpolants, 0 QuantifiedInterpolants, 1030 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 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/McCarthy9102.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-25_09-38-53-834.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/McCarthy9102.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-25_09-38-53-834.csv Received shutdown request...