java -Xss1g -Xmx4000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCHC.xml --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -s ../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_No_Goto.epf -i /storage/chc-comp/hopv/lia/mochi/sum2.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 11:36:02,045 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 11:36:02,047 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 11:36:02,065 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 11:36:02,065 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 11:36:02,066 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 11:36:02,067 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 11:36:02,073 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 11:36:02,075 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 11:36:02,076 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 11:36:02,077 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 11:36:02,078 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 11:36:02,079 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 11:36:02,082 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 11:36:02,083 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 11:36:02,083 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 11:36:02,085 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 11:36:02,087 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 11:36:02,088 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 11:36:02,089 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 11:36:02,091 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 11:36:02,093 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 11:36:02,093 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 11:36:02,093 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 11:36:02,094 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 11:36:02,095 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 11:36:02,096 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 11:36:02,097 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 11:36:02,098 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 11:36:02,099 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 11:36:02,099 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 11:36:02,100 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 11:36:02,100 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 11:36:02,101 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 11:36:02,102 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 11:36:02,102 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_No_Goto.epf [2018-06-22 11:36:02,116 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 11:36:02,116 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 11:36:02,116 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 11:36:02,117 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 11:36:02,118 INFO L131 SettingsManager]: Preferences of ChcToBoogie differ from their defaults: [2018-06-22 11:36:02,118 INFO L133 SettingsManager]: * Use one large procedure with gotos to replace tail recursive calls=false [2018-06-22 11:36:02,118 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 11:36:02,118 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 11:36:02,119 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 11:36:02,119 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 11:36:02,119 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 11:36:02,119 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 11:36:02,120 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 11:36:02,120 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 11:36:02,120 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 11:36:02,120 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 11:36:02,120 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 11:36:02,121 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 11:36:02,121 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 11:36:02,122 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 11:36:02,123 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 11:36:02,181 INFO ]: Repository-Root is: /tmp [2018-06-22 11:36:02,197 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 11:36:02,201 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 11:36:02,203 INFO ]: Initializing SmtParser... [2018-06-22 11:36:02,203 INFO ]: SmtParser initialized [2018-06-22 11:36:02,204 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/hopv/lia/mochi/sum2.smt2 [2018-06-22 11:36:02,205 INFO ]: Parsing .smt2 file as a set of Horn Clauses No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-06-22 11:36:02,306 INFO ]: Executing SMT file /storage/chc-comp/hopv/lia/mochi/sum2.smt2 unknown [2018-06-22 11:36:02,441 INFO ]: Succesfully executed SMT file /storage/chc-comp/hopv/lia/mochi/sum2.smt2 [2018-06-22 11:36:02,447 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 11:36:02,453 INFO ]: Walking toolchain with 4 elements. [2018-06-22 11:36:02,453 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 11:36:02,453 INFO ]: Initializing ChcToBoogie... [2018-06-22 11:36:02,454 INFO ]: ChcToBoogie initialized [2018-06-22 11:36:02,457 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 11:36:02" (1/1) ... [2018-06-22 11:36:02,503 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:36:02 Unit [2018-06-22 11:36:02,503 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 11:36:02,503 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 11:36:02,503 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 11:36:02,504 INFO ]: Boogie Preprocessor initialized [2018-06-22 11:36:02,527 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:36:02" (1/1) ... [2018-06-22 11:36:02,527 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:36:02" (1/1) ... [2018-06-22 11:36:02,534 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:36:02" (1/1) ... [2018-06-22 11:36:02,534 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:36:02" (1/1) ... [2018-06-22 11:36:02,537 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:36:02" (1/1) ... [2018-06-22 11:36:02,538 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:36:02" (1/1) ... [2018-06-22 11:36:02,539 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:36:02" (1/1) ... [2018-06-22 11:36:02,541 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 11:36:02,541 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 11:36:02,541 INFO ]: Initializing RCFGBuilder... [2018-06-22 11:36:02,541 INFO ]: RCFGBuilder initialized [2018-06-22 11:36:02,542 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:36:02" (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) [2018-06-22 11:36:02,559 INFO ]: Specification and implementation of procedure False given in one single declaration [2018-06-22 11:36:02,559 INFO ]: Found specification of procedure False [2018-06-22 11:36:02,559 INFO ]: Found implementation of procedure False [2018-06-22 11:36:02,559 INFO ]: Specification and implementation of procedure sumDLRunknownCLN2 given in one single declaration [2018-06-22 11:36:02,559 INFO ]: Found specification of procedure sumDLRunknownCLN2 [2018-06-22 11:36:02,559 INFO ]: Found implementation of procedure sumDLRunknownCLN2 [2018-06-22 11:36:02,559 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 11:36:02,559 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 11:36:02,559 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 [2018-06-22 11:36:02,811 INFO ]: Using library mode [2018-06-22 11:36:02,812 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 11:36:02 BoogieIcfgContainer [2018-06-22 11:36:02,812 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 11:36:02,816 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 11:36:02,816 INFO ]: Initializing TraceAbstraction... [2018-06-22 11:36:02,820 INFO ]: TraceAbstraction initialized [2018-06-22 11:36:02,821 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 11:36:02" (1/3) ... [2018-06-22 11:36:02,822 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bc3ee14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 11:36:02, skipping insertion in model container [2018-06-22 11:36:02,822 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:36:02" (2/3) ... [2018-06-22 11:36:02,822 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bc3ee14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 11:36:02, skipping insertion in model container [2018-06-22 11:36:02,822 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 11:36:02" (3/3) ... [2018-06-22 11:36:02,825 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 11:36:02,835 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 11:36:02,845 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 11:36:02,897 INFO ]: Using default assertion order modulation [2018-06-22 11:36:02,897 INFO ]: Interprodecural is true [2018-06-22 11:36:02,897 INFO ]: Hoare is false [2018-06-22 11:36:02,897 INFO ]: Compute interpolants for FPandBP [2018-06-22 11:36:02,898 INFO ]: Backedges is TWOTRACK [2018-06-22 11:36:02,898 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 11:36:02,898 INFO ]: Difference is false [2018-06-22 11:36:02,898 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 11:36:02,898 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 11:36:02,920 INFO ]: Start isEmpty. Operand 13 states. [2018-06-22 11:36:02,935 INFO ]: Finished isEmpty. Found accepting run of length 6 [2018-06-22 11:36:02,935 INFO ]: Found error trace [2018-06-22 11:36:02,937 INFO ]: trace histogram [1, 1, 1, 1, 1] [2018-06-22 11:36:02,937 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:36:02,943 INFO ]: Analyzing trace with hash 53229675, now seen corresponding path program 1 times [2018-06-22 11:36:02,945 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:36:02,945 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:36:02,982 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:36:02,982 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:36:02,982 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:36:02,995 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:36:03,023 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 11:36:03,026 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 11:36:03,026 INFO ]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-06-22 11:36:03,027 INFO ]: Interpolant automaton has 2 states [2018-06-22 11:36:03,038 INFO ]: Constructing interpolant automaton starting with 2 interpolants. [2018-06-22 11:36:03,039 INFO ]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-06-22 11:36:03,040 INFO ]: Start difference. First operand 13 states. Second operand 2 states. [2018-06-22 11:36:03,061 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:36:03,063 INFO ]: Finished difference Result 11 states and 12 transitions. [2018-06-22 11:36:03,063 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-06-22 11:36:03,065 INFO ]: Start accepts. Automaton has 2 states. Word has length 5 [2018-06-22 11:36:03,065 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:36:03,086 INFO ]: With dead ends: 11 [2018-06-22 11:36:03,086 INFO ]: Without dead ends: 11 [2018-06-22 11:36:03,088 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 [2018-06-22 11:36:03,108 INFO ]: Start minimizeSevpa. Operand 11 states. [2018-06-22 11:36:03,126 INFO ]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-06-22 11:36:03,127 INFO ]: Start removeUnreachable. Operand 11 states. [2018-06-22 11:36:03,127 INFO ]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2018-06-22 11:36:03,128 INFO ]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 5 [2018-06-22 11:36:03,128 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:36:03,128 INFO ]: Abstraction has 11 states and 12 transitions. [2018-06-22 11:36:03,128 INFO ]: Interpolant automaton has 2 states. [2018-06-22 11:36:03,128 INFO ]: Start isEmpty. Operand 11 states and 12 transitions. [2018-06-22 11:36:03,129 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 11:36:03,129 INFO ]: Found error trace [2018-06-22 11:36:03,129 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:36:03,129 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:36:03,129 INFO ]: Analyzing trace with hash 2123728052, now seen corresponding path program 1 times [2018-06-22 11:36:03,129 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:36:03,129 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:36:03,130 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:36:03,130 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:36:03,130 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:36:03,151 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:36:03,314 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 11:36:03,314 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 11:36:03,314 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 11:36:03,315 INFO ]: Interpolant automaton has 4 states [2018-06-22 11:36:03,316 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 11:36:03,316 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 11:36:03,316 INFO ]: Start difference. First operand 11 states and 12 transitions. Second operand 4 states. [2018-06-22 11:36:03,364 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:36:03,364 INFO ]: Finished difference Result 13 states and 14 transitions. [2018-06-22 11:36:03,364 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 11:36:03,364 INFO ]: Start accepts. Automaton has 4 states. Word has length 9 [2018-06-22 11:36:03,364 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:36:03,366 INFO ]: With dead ends: 13 [2018-06-22 11:36:03,366 INFO ]: Without dead ends: 13 [2018-06-22 11:36:03,367 INFO ]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 11:36:03,367 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-22 11:36:03,374 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-22 11:36:03,375 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-22 11:36:03,375 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2018-06-22 11:36:03,376 INFO ]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 9 [2018-06-22 11:36:03,376 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:36:03,376 INFO ]: Abstraction has 13 states and 14 transitions. [2018-06-22 11:36:03,376 INFO ]: Interpolant automaton has 4 states. [2018-06-22 11:36:03,376 INFO ]: Start isEmpty. Operand 13 states and 14 transitions. [2018-06-22 11:36:03,376 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-22 11:36:03,376 INFO ]: Found error trace [2018-06-22 11:36:03,376 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:36:03,376 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:36:03,377 INFO ]: Analyzing trace with hash -190937962, now seen corresponding path program 1 times [2018-06-22 11:36:03,377 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:36:03,377 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:36:03,378 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:36:03,378 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:36:03,378 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:36:03,397 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:36:03,531 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 11:36:03,531 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:36:03,531 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 11:36:03,538 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:36:03,562 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:36:03,569 INFO ]: Computing forward predicates... [2018-06-22 11:36:04,103 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 11:36:04,136 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:36:04,136 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2018-06-22 11:36:04,137 INFO ]: Interpolant automaton has 9 states [2018-06-22 11:36:04,137 INFO ]: Constructing interpolant automaton starting with 9 interpolants. [2018-06-22 11:36:04,137 INFO ]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2018-06-22 11:36:04,137 INFO ]: Start difference. First operand 13 states and 14 transitions. Second operand 9 states. [2018-06-22 11:36:04,459 WARN ]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-06-22 11:36:04,567 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:36:04,567 INFO ]: Finished difference Result 17 states and 18 transitions. [2018-06-22 11:36:04,567 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-22 11:36:04,567 INFO ]: Start accepts. Automaton has 9 states. Word has length 13 [2018-06-22 11:36:04,567 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:36:04,568 INFO ]: With dead ends: 17 [2018-06-22 11:36:04,568 INFO ]: Without dead ends: 17 [2018-06-22 11:36:04,569 INFO ]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2018-06-22 11:36:04,569 INFO ]: Start minimizeSevpa. Operand 17 states. [2018-06-22 11:36:04,574 INFO ]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-06-22 11:36:04,575 INFO ]: Start removeUnreachable. Operand 17 states. [2018-06-22 11:36:04,575 INFO ]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2018-06-22 11:36:04,575 INFO ]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 13 [2018-06-22 11:36:04,575 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:36:04,575 INFO ]: Abstraction has 17 states and 18 transitions. [2018-06-22 11:36:04,575 INFO ]: Interpolant automaton has 9 states. [2018-06-22 11:36:04,575 INFO ]: Start isEmpty. Operand 17 states and 18 transitions. [2018-06-22 11:36:04,576 INFO ]: Finished isEmpty. Found accepting run of length 22 [2018-06-22 11:36:04,576 INFO ]: Found error trace [2018-06-22 11:36:04,576 INFO ]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:36:04,576 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:36:04,577 INFO ]: Analyzing trace with hash 1030370522, now seen corresponding path program 2 times [2018-06-22 11:36:04,577 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:36:04,577 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:36:04,577 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:36:04,577 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:36:04,577 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:36:04,600 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:36:04,880 INFO ]: Checked inductivity of 21 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-06-22 11:36:04,880 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:36:04,880 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 11:36:04,893 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 11:36:04,909 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 11:36:04,909 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:36:04,911 INFO ]: Computing forward predicates... [2018-06-22 11:36:05,044 INFO ]: Checked inductivity of 21 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-06-22 11:36:05,065 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:36:05,065 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 11 [2018-06-22 11:36:05,065 INFO ]: Interpolant automaton has 11 states [2018-06-22 11:36:05,066 INFO ]: Constructing interpolant automaton starting with 11 interpolants. [2018-06-22 11:36:05,066 INFO ]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2018-06-22 11:36:05,066 INFO ]: Start difference. First operand 17 states and 18 transitions. Second operand 11 states. [2018-06-22 11:36:05,497 WARN ]: Spent 275.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 16 [2018-06-22 11:36:05,524 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:36:05,524 INFO ]: Finished difference Result 13 states and 14 transitions. [2018-06-22 11:36:05,525 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-06-22 11:36:05,526 INFO ]: Start accepts. Automaton has 11 states. Word has length 21 [2018-06-22 11:36:05,526 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:36:05,526 INFO ]: With dead ends: 13 [2018-06-22 11:36:05,526 INFO ]: Without dead ends: 0 [2018-06-22 11:36:05,526 INFO ]: 0 DeclaredPredicates, 35 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2018-06-22 11:36:05,526 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-22 11:36:05,526 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-22 11:36:05,527 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-22 11:36:05,527 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-22 11:36:05,527 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2018-06-22 11:36:05,527 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:36:05,527 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-22 11:36:05,527 INFO ]: Interpolant automaton has 11 states. [2018-06-22 11:36:05,527 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-22 11:36:05,527 INFO ]: Finished isEmpty. No accepting run. [2018-06-22 11:36:05,533 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 11:36:05 BoogieIcfgContainer [2018-06-22 11:36:05,533 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 11:36:05,534 INFO ]: Toolchain (without parser) took 3086.64 ms. Allocated memory was 309.3 MB in the beginning and 325.1 MB in the end (delta: 15.7 MB). Free memory was 266.8 MB in the beginning and 278.2 MB in the end (delta: -11.4 MB). Peak memory consumption was 4.4 MB. Max. memory is 3.6 GB. [2018-06-22 11:36:05,536 INFO ]: SmtParser took 0.10 ms. Allocated memory is still 309.3 MB. Free memory is still 275.0 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 11:36:05,536 INFO ]: ChcToBoogie took 49.72 ms. Allocated memory is still 309.3 MB. Free memory was 265.9 MB in the beginning and 264.9 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 3.6 GB. [2018-06-22 11:36:05,537 INFO ]: Boogie Preprocessor took 37.37 ms. Allocated memory is still 309.3 MB. Free memory was 264.9 MB in the beginning and 262.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 11:36:05,537 INFO ]: RCFGBuilder took 270.52 ms. Allocated memory is still 309.3 MB. Free memory was 262.9 MB in the beginning and 256.7 MB in the end (delta: 6.1 MB). Peak memory consumption was 6.1 MB. Max. memory is 3.6 GB. [2018-06-22 11:36:05,538 INFO ]: TraceAbstraction took 2716.94 ms. Allocated memory was 309.3 MB in the beginning and 325.1 MB in the end (delta: 15.7 MB). Free memory was 256.7 MB in the beginning and 278.2 MB in the end (delta: -21.5 MB). There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 11:36:05,542 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.10 ms. Allocated memory is still 309.3 MB. Free memory is still 275.0 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 49.72 ms. Allocated memory is still 309.3 MB. Free memory was 265.9 MB in the beginning and 264.9 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 3.6 GB. * Boogie Preprocessor took 37.37 ms. Allocated memory is still 309.3 MB. Free memory was 264.9 MB in the beginning and 262.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 270.52 ms. Allocated memory is still 309.3 MB. Free memory was 262.9 MB in the beginning and 256.7 MB in the end (delta: 6.1 MB). Peak memory consumption was 6.1 MB. Max. memory is 3.6 GB. * TraceAbstraction took 2716.94 ms. Allocated memory was 309.3 MB in the beginning and 325.1 MB in the end (delta: 15.7 MB). Free memory was 256.7 MB in the beginning and 278.2 MB in the end (delta: -21.5 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 3 procedures, 13 locations, 1 error locations. SAFE Result, 2.6s OverallTime, 4 OverallIterations, 4 TraceHistogramMax, 1.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 44 SDtfs, 9 SDslu, 84 SDs, 0 SdLazy, 71 SolverSat, 13 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 61 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred in iteration=3, 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, 1.2s InterpolantComputationTime, 82 NumberOfCodeBlocks, 82 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 76 ConstructedInterpolants, 0 QuantifiedInterpolants, 4032 SizeOfPredicates, 19 NumberOfNonLiveVariables, 114 ConjunctsInSsa, 33 ConjunctsInUnsatCore, 6 InterpolantComputations, 2 PerfectInterpolantSequences, 18/48 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/sum2.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_11-36-05-565.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/sum2.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_11-36-05-565.csv Received shutdown request...