java -Xss1g -Xmx4000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCHC.xml --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -s ../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf -i /storage/chc-comp/hopv/lia/termination/Fibonacci03.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 01:56:33,031 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 01:56:33,033 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 01:56:33,048 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 01:56:33,049 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 01:56:33,050 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 01:56:33,051 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 01:56:33,054 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 01:56:33,056 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 01:56:33,058 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 01:56:33,059 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 01:56:33,059 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 01:56:33,060 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 01:56:33,064 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 01:56:33,064 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 01:56:33,065 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 01:56:33,074 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 01:56:33,076 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 01:56:33,077 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 01:56:33,081 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 01:56:33,082 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 01:56:33,085 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 01:56:33,085 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 01:56:33,085 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 01:56:33,086 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 01:56:33,087 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 01:56:33,090 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 01:56:33,090 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 01:56:33,091 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 01:56:33,091 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 01:56:33,092 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 01:56:33,098 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 01:56:33,098 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 01:56:33,099 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 01:56:33,100 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 01:56:33,100 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-22 01:56:33,131 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 01:56:33,131 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 01:56:33,134 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 01:56:33,134 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 01:56:33,135 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 01:56:33,135 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 01:56:33,136 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 01:56:33,136 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 01:56:33,136 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 01:56:33,136 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 01:56:33,136 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 01:56:33,137 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 01:56:33,139 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 01:56:33,140 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 01:56:33,140 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 01:56:33,140 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 01:56:33,140 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 01:56:33,142 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 01:56:33,142 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 01:56:33,197 INFO ]: Repository-Root is: /tmp [2018-06-22 01:56:33,217 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 01:56:33,222 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 01:56:33,224 INFO ]: Initializing SmtParser... [2018-06-22 01:56:33,225 INFO ]: SmtParser initialized [2018-06-22 01:56:33,225 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/hopv/lia/termination/Fibonacci03.smt2 [2018-06-22 01:56:33,227 INFO ]: Parsing .smt2 file as a set of Horn Clauses No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-06-22 01:56:33,320 INFO ]: Executing SMT file /storage/chc-comp/hopv/lia/termination/Fibonacci03.smt2 unknown [2018-06-22 01:56:33,622 INFO ]: Succesfully executed SMT file /storage/chc-comp/hopv/lia/termination/Fibonacci03.smt2 [2018-06-22 01:56:33,630 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 01:56:33,636 INFO ]: Walking toolchain with 4 elements. [2018-06-22 01:56:33,637 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 01:56:33,637 INFO ]: Initializing ChcToBoogie... [2018-06-22 01:56:33,637 INFO ]: ChcToBoogie initialized [2018-06-22 01:56:33,641 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 01:56:33" (1/1) ... [2018-06-22 01:56:33,715 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:56:33 Unit [2018-06-22 01:56:33,716 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 01:56:33,716 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 01:56:33,716 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 01:56:33,716 INFO ]: Boogie Preprocessor initialized [2018-06-22 01:56:33,738 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:56:33" (1/1) ... [2018-06-22 01:56:33,739 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:56:33" (1/1) ... [2018-06-22 01:56:33,747 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:56:33" (1/1) ... [2018-06-22 01:56:33,747 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:56:33" (1/1) ... [2018-06-22 01:56:33,770 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:56:33" (1/1) ... [2018-06-22 01:56:33,773 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:56:33" (1/1) ... [2018-06-22 01:56:33,775 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:56:33" (1/1) ... [2018-06-22 01:56:33,778 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 01:56:33,779 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 01:56:33,779 INFO ]: Initializing RCFGBuilder... [2018-06-22 01:56:33,779 INFO ]: RCFGBuilder initialized [2018-06-22 01:56:33,780 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:56:33" (1/1) ... No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 01:56:33,791 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-22 01:56:33,792 INFO ]: Found specification of procedure gotoProc [2018-06-22 01:56:33,792 INFO ]: Found implementation of procedure gotoProc [2018-06-22 01:56:33,792 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 01:56:33,792 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 01:56:33,792 INFO ]: Found implementation of procedure Ultimate.START [2018-06-22 01:56:34,475 INFO ]: Using library mode [2018-06-22 01:56:34,475 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 01:56:34 BoogieIcfgContainer [2018-06-22 01:56:34,475 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 01:56:34,477 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 01:56:34,477 INFO ]: Initializing TraceAbstraction... [2018-06-22 01:56:34,481 INFO ]: TraceAbstraction initialized [2018-06-22 01:56:34,481 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 01:56:33" (1/3) ... [2018-06-22 01:56:34,482 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1385fb9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 01:56:34, skipping insertion in model container [2018-06-22 01:56:34,482 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:56:33" (2/3) ... [2018-06-22 01:56:34,482 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1385fb9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 01:56:34, skipping insertion in model container [2018-06-22 01:56:34,482 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 01:56:34" (3/3) ... [2018-06-22 01:56:34,484 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 01:56:34,492 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 01:56:34,499 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 01:56:34,555 INFO ]: Using default assertion order modulation [2018-06-22 01:56:34,555 INFO ]: Interprodecural is true [2018-06-22 01:56:34,555 INFO ]: Hoare is false [2018-06-22 01:56:34,555 INFO ]: Compute interpolants for FPandBP [2018-06-22 01:56:34,555 INFO ]: Backedges is TWOTRACK [2018-06-22 01:56:34,555 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 01:56:34,555 INFO ]: Difference is false [2018-06-22 01:56:34,555 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 01:56:34,555 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 01:56:34,573 INFO ]: Start isEmpty. Operand 45 states. [2018-06-22 01:56:34,585 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-22 01:56:34,585 INFO ]: Found error trace [2018-06-22 01:56:34,586 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:56:34,586 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:56:34,591 INFO ]: Analyzing trace with hash -602114828, now seen corresponding path program 1 times [2018-06-22 01:56:34,593 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:56:34,593 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:56:34,635 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:56:34,635 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:56:34,635 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:56:34,674 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:56:34,778 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 01:56:34,779 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 01:56:34,780 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 01:56:34,781 INFO ]: Interpolant automaton has 4 states [2018-06-22 01:56:34,792 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 01:56:34,792 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 01:56:34,795 INFO ]: Start difference. First operand 45 states. Second operand 4 states. [2018-06-22 01:56:35,832 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:56:35,832 INFO ]: Finished difference Result 83 states and 131 transitions. [2018-06-22 01:56:35,832 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-22 01:56:35,833 INFO ]: Start accepts. Automaton has 4 states. Word has length 8 [2018-06-22 01:56:35,834 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:56:35,849 INFO ]: With dead ends: 83 [2018-06-22 01:56:35,850 INFO ]: Without dead ends: 73 [2018-06-22 01:56:35,852 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 [2018-06-22 01:56:35,868 INFO ]: Start minimizeSevpa. Operand 73 states. [2018-06-22 01:56:35,908 INFO ]: Finished minimizeSevpa. Reduced states from 73 to 73. [2018-06-22 01:56:35,909 INFO ]: Start removeUnreachable. Operand 73 states. [2018-06-22 01:56:35,914 INFO ]: Finished removeUnreachable. Reduced from 73 states to 73 states and 113 transitions. [2018-06-22 01:56:35,916 INFO ]: Start accepts. Automaton has 73 states and 113 transitions. Word has length 8 [2018-06-22 01:56:35,916 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:56:35,916 INFO ]: Abstraction has 73 states and 113 transitions. [2018-06-22 01:56:35,916 INFO ]: Interpolant automaton has 4 states. [2018-06-22 01:56:35,916 INFO ]: Start isEmpty. Operand 73 states and 113 transitions. [2018-06-22 01:56:35,918 INFO ]: Finished isEmpty. Found accepting run of length 12 [2018-06-22 01:56:35,918 INFO ]: Found error trace [2018-06-22 01:56:35,918 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:56:35,919 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:56:35,919 INFO ]: Analyzing trace with hash -1075358187, now seen corresponding path program 1 times [2018-06-22 01:56:35,919 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:56:35,919 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:56:35,920 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:56:35,920 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:56:35,920 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:56:35,925 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:56:36,026 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 01:56:36,026 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 01:56:36,026 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 01:56:36,028 INFO ]: Interpolant automaton has 4 states [2018-06-22 01:56:36,028 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 01:56:36,028 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 01:56:36,028 INFO ]: Start difference. First operand 73 states and 113 transitions. Second operand 4 states. [2018-06-22 01:56:36,902 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:56:36,902 INFO ]: Finished difference Result 107 states and 166 transitions. [2018-06-22 01:56:36,902 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-22 01:56:36,902 INFO ]: Start accepts. Automaton has 4 states. Word has length 11 [2018-06-22 01:56:36,902 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:56:36,909 INFO ]: With dead ends: 107 [2018-06-22 01:56:36,910 INFO ]: Without dead ends: 107 [2018-06-22 01:56:36,910 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 [2018-06-22 01:56:36,911 INFO ]: Start minimizeSevpa. Operand 107 states. [2018-06-22 01:56:36,932 INFO ]: Finished minimizeSevpa. Reduced states from 107 to 107. [2018-06-22 01:56:36,932 INFO ]: Start removeUnreachable. Operand 107 states. [2018-06-22 01:56:36,937 INFO ]: Finished removeUnreachable. Reduced from 107 states to 107 states and 166 transitions. [2018-06-22 01:56:36,938 INFO ]: Start accepts. Automaton has 107 states and 166 transitions. Word has length 11 [2018-06-22 01:56:36,938 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:56:36,938 INFO ]: Abstraction has 107 states and 166 transitions. [2018-06-22 01:56:36,938 INFO ]: Interpolant automaton has 4 states. [2018-06-22 01:56:36,938 INFO ]: Start isEmpty. Operand 107 states and 166 transitions. [2018-06-22 01:56:36,939 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-22 01:56:36,940 INFO ]: Found error trace [2018-06-22 01:56:36,940 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:56:36,940 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:56:36,940 INFO ]: Analyzing trace with hash 1492673743, now seen corresponding path program 1 times [2018-06-22 01:56:36,940 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:56:36,940 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:56:36,941 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:56:36,941 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:56:36,941 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:56:36,948 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:56:36,986 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 01:56:36,986 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 01:56:36,987 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 01:56:36,987 INFO ]: Interpolant automaton has 4 states [2018-06-22 01:56:36,987 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 01:56:36,987 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 01:56:36,987 INFO ]: Start difference. First operand 107 states and 166 transitions. Second operand 4 states. [2018-06-22 01:56:37,597 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:56:37,598 INFO ]: Finished difference Result 141 states and 219 transitions. [2018-06-22 01:56:37,598 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-22 01:56:37,598 INFO ]: Start accepts. Automaton has 4 states. Word has length 13 [2018-06-22 01:56:37,598 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:56:37,607 INFO ]: With dead ends: 141 [2018-06-22 01:56:37,607 INFO ]: Without dead ends: 141 [2018-06-22 01:56:37,607 INFO ]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-06-22 01:56:37,607 INFO ]: Start minimizeSevpa. Operand 141 states. [2018-06-22 01:56:37,628 INFO ]: Finished minimizeSevpa. Reduced states from 141 to 141. [2018-06-22 01:56:37,628 INFO ]: Start removeUnreachable. Operand 141 states. [2018-06-22 01:56:37,633 INFO ]: Finished removeUnreachable. Reduced from 141 states to 141 states and 219 transitions. [2018-06-22 01:56:37,633 INFO ]: Start accepts. Automaton has 141 states and 219 transitions. Word has length 13 [2018-06-22 01:56:37,633 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:56:37,633 INFO ]: Abstraction has 141 states and 219 transitions. [2018-06-22 01:56:37,633 INFO ]: Interpolant automaton has 4 states. [2018-06-22 01:56:37,633 INFO ]: Start isEmpty. Operand 141 states and 219 transitions. [2018-06-22 01:56:37,637 INFO ]: Finished isEmpty. Found accepting run of length 16 [2018-06-22 01:56:37,637 INFO ]: Found error trace [2018-06-22 01:56:37,637 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:56:37,637 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:56:37,637 INFO ]: Analyzing trace with hash -638618071, now seen corresponding path program 1 times [2018-06-22 01:56:37,637 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:56:37,637 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:56:37,638 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:56:37,638 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:56:37,638 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:56:37,676 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:56:37,769 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 01:56:37,769 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 01:56:37,769 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-22 01:56:37,770 INFO ]: Interpolant automaton has 3 states [2018-06-22 01:56:37,770 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-22 01:56:37,770 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-22 01:56:37,770 INFO ]: Start difference. First operand 141 states and 219 transitions. Second operand 3 states. [2018-06-22 01:56:37,809 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:56:37,809 INFO ]: Finished difference Result 118 states and 177 transitions. [2018-06-22 01:56:37,811 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-22 01:56:37,811 INFO ]: Start accepts. Automaton has 3 states. Word has length 15 [2018-06-22 01:56:37,811 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:56:37,811 INFO ]: With dead ends: 118 [2018-06-22 01:56:37,811 INFO ]: Without dead ends: 0 [2018-06-22 01:56:37,812 INFO ]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-22 01:56:37,812 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-22 01:56:37,812 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-22 01:56:37,812 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-22 01:56:37,812 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-22 01:56:37,812 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2018-06-22 01:56:37,812 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:56:37,812 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-22 01:56:37,812 INFO ]: Interpolant automaton has 3 states. [2018-06-22 01:56:37,812 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-22 01:56:37,812 INFO ]: Finished isEmpty. No accepting run. [2018-06-22 01:56:37,818 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 01:56:37 BoogieIcfgContainer [2018-06-22 01:56:37,818 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 01:56:37,819 INFO ]: Toolchain (without parser) took 4188.72 ms. Allocated memory was 304.6 MB in the beginning and 325.1 MB in the end (delta: 20.4 MB). Free memory was 254.0 MB in the beginning and 219.9 MB in the end (delta: 34.1 MB). Peak memory consumption was 54.6 MB. Max. memory is 3.6 GB. [2018-06-22 01:56:37,821 INFO ]: SmtParser took 0.12 ms. Allocated memory is still 304.6 MB. Free memory is still 270.1 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 01:56:37,821 INFO ]: ChcToBoogie took 79.07 ms. Allocated memory is still 304.6 MB. Free memory was 254.0 MB in the beginning and 251.0 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. [2018-06-22 01:56:37,822 INFO ]: Boogie Preprocessor took 62.01 ms. Allocated memory is still 304.6 MB. Free memory was 251.0 MB in the beginning and 249.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 01:56:37,823 INFO ]: RCFGBuilder took 696.83 ms. Allocated memory is still 304.6 MB. Free memory was 249.0 MB in the beginning and 226.9 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 3.6 GB. [2018-06-22 01:56:37,823 INFO ]: TraceAbstraction took 3341.08 ms. Allocated memory was 304.6 MB in the beginning and 325.1 MB in the end (delta: 20.4 MB). Free memory was 226.9 MB in the beginning and 219.9 MB in the end (delta: 7.1 MB). Peak memory consumption was 27.5 MB. Max. memory is 3.6 GB. [2018-06-22 01:56:37,829 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.12 ms. Allocated memory is still 304.6 MB. Free memory is still 270.1 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 79.07 ms. Allocated memory is still 304.6 MB. Free memory was 254.0 MB in the beginning and 251.0 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 62.01 ms. Allocated memory is still 304.6 MB. Free memory was 251.0 MB in the beginning and 249.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 696.83 ms. Allocated memory is still 304.6 MB. Free memory was 249.0 MB in the beginning and 226.9 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 3341.08 ms. Allocated memory was 304.6 MB in the beginning and 325.1 MB in the end (delta: 20.4 MB). Free memory was 226.9 MB in the beginning and 219.9 MB in the end (delta: 7.1 MB). Peak memory consumption was 27.5 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, 45 locations, 1 error locations. SAFE Result, 3.2s OverallTime, 4 OverallIterations, 1 TraceHistogramMax, 2.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 185 SDtfs, 231 SDslu, 122 SDs, 0 SdLazy, 272 SolverSat, 145 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=141occurred 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: 0.1s AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 47 NumberOfCodeBlocks, 47 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 43 ConstructedInterpolants, 0 QuantifiedInterpolants, 1071 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/Fibonacci03.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_01-56-37-852.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/Fibonacci03.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_01-56-37-852.csv Received shutdown request...