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/eldarica-misc/LIA/Consistency/incremental.36.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 00:49:05,901 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 00:49:05,903 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 00:49:05,914 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 00:49:05,914 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 00:49:05,915 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 00:49:05,919 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 00:49:05,921 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 00:49:05,923 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 00:49:05,923 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 00:49:05,925 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 00:49:05,925 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 00:49:05,926 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 00:49:05,927 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 00:49:05,930 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 00:49:05,931 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 00:49:05,933 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 00:49:05,946 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 00:49:05,948 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 00:49:05,949 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 00:49:05,950 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 00:49:05,952 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 00:49:05,952 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 00:49:05,952 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 00:49:05,953 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 00:49:05,958 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 00:49:05,959 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 00:49:05,959 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 00:49:05,960 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 00:49:05,961 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 00:49:05,961 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 00:49:05,966 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 00:49:05,967 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 00:49:05,967 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 00:49:05,968 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 00:49:05,968 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-22 00:49:05,991 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 00:49:05,991 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 00:49:05,991 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 00:49:05,991 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 00:49:05,993 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 00:49:05,993 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 00:49:05,993 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 00:49:05,994 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 00:49:05,994 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 00:49:05,994 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 00:49:05,994 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 00:49:05,994 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 00:49:05,994 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 00:49:05,995 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 00:49:05,995 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 00:49:05,995 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 00:49:05,995 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 00:49:05,997 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 00:49:05,997 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 00:49:06,049 INFO ]: Repository-Root is: /tmp [2018-06-22 00:49:06,064 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 00:49:06,071 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 00:49:06,072 INFO ]: Initializing SmtParser... [2018-06-22 00:49:06,072 INFO ]: SmtParser initialized [2018-06-22 00:49:06,073 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/eldarica-misc/LIA/Consistency/incremental.36.smt2 [2018-06-22 00:49:06,075 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 00:49:06,152 INFO ]: Executing SMT file /storage/chc-comp/eldarica-misc/LIA/Consistency/incremental.36.smt2 unknown [2018-06-22 00:49:06,884 INFO ]: Succesfully executed SMT file /storage/chc-comp/eldarica-misc/LIA/Consistency/incremental.36.smt2 [2018-06-22 00:49:06,892 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 00:49:06,903 INFO ]: Walking toolchain with 4 elements. [2018-06-22 00:49:06,904 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 00:49:06,904 INFO ]: Initializing ChcToBoogie... [2018-06-22 00:49:06,904 INFO ]: ChcToBoogie initialized [2018-06-22 00:49:06,916 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 12:49:06" (1/1) ... [2018-06-22 00:49:07,052 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 12:49:07 Unit [2018-06-22 00:49:07,052 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 00:49:07,053 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 00:49:07,053 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 00:49:07,053 INFO ]: Boogie Preprocessor initialized [2018-06-22 00:49:07,073 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 12:49:07" (1/1) ... [2018-06-22 00:49:07,073 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 12:49:07" (1/1) ... [2018-06-22 00:49:07,097 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 12:49:07" (1/1) ... [2018-06-22 00:49:07,097 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 12:49:07" (1/1) ... [2018-06-22 00:49:07,121 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 12:49:07" (1/1) ... [2018-06-22 00:49:07,125 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 12:49:07" (1/1) ... [2018-06-22 00:49:07,130 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 12:49:07" (1/1) ... [2018-06-22 00:49:07,137 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 00:49:07,138 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 00:49:07,138 INFO ]: Initializing RCFGBuilder... [2018-06-22 00:49:07,138 INFO ]: RCFGBuilder initialized [2018-06-22 00:49:07,139 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 12:49:07" (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 00:49:07,163 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-22 00:49:07,163 INFO ]: Found specification of procedure gotoProc [2018-06-22 00:49:07,163 INFO ]: Found implementation of procedure gotoProc [2018-06-22 00:49:07,163 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 00:49:07,163 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 00:49:07,163 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 00:49:09,391 INFO ]: Using library mode [2018-06-22 00:49:09,392 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 12:49:09 BoogieIcfgContainer [2018-06-22 00:49:09,392 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 00:49:09,395 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 00:49:09,395 INFO ]: Initializing TraceAbstraction... [2018-06-22 00:49:09,401 INFO ]: TraceAbstraction initialized [2018-06-22 00:49:09,401 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 12:49:06" (1/3) ... [2018-06-22 00:49:09,402 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13778814 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 12:49:09, skipping insertion in model container [2018-06-22 00:49:09,402 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 12:49:07" (2/3) ... [2018-06-22 00:49:09,402 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13778814 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 12:49:09, skipping insertion in model container [2018-06-22 00:49:09,402 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 12:49:09" (3/3) ... [2018-06-22 00:49:09,404 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 00:49:09,414 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 00:49:09,423 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 00:49:09,481 INFO ]: Using default assertion order modulation [2018-06-22 00:49:09,482 INFO ]: Interprodecural is true [2018-06-22 00:49:09,482 INFO ]: Hoare is false [2018-06-22 00:49:09,482 INFO ]: Compute interpolants for FPandBP [2018-06-22 00:49:09,482 INFO ]: Backedges is TWOTRACK [2018-06-22 00:49:09,482 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 00:49:09,482 INFO ]: Difference is false [2018-06-22 00:49:09,482 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 00:49:09,482 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 00:49:09,511 INFO ]: Start isEmpty. Operand 146 states. [2018-06-22 00:49:09,531 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-22 00:49:09,531 INFO ]: Found error trace [2018-06-22 00:49:09,532 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 00:49:09,533 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 00:49:09,539 INFO ]: Analyzing trace with hash 615777974, now seen corresponding path program 1 times [2018-06-22 00:49:09,541 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 00:49:09,542 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 00:49:09,581 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 00:49:09,581 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 00:49:09,581 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 00:49:09,631 INFO ]: Conjunction of SSA is unsat [2018-06-22 00:49:09,936 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 00:49:09,939 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 00:49:09,939 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 00:49:09,940 INFO ]: Interpolant automaton has 4 states [2018-06-22 00:49:09,955 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 00:49:09,956 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 00:49:09,958 INFO ]: Start difference. First operand 146 states. Second operand 4 states. [2018-06-22 00:49:12,906 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 00:49:12,907 INFO ]: Finished difference Result 285 states and 555 transitions. [2018-06-22 00:49:12,907 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-22 00:49:12,908 INFO ]: Start accepts. Automaton has 4 states. Word has length 8 [2018-06-22 00:49:12,908 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 00:49:12,957 INFO ]: With dead ends: 285 [2018-06-22 00:49:12,957 INFO ]: Without dead ends: 283 [2018-06-22 00:49:12,959 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 00:49:12,979 INFO ]: Start minimizeSevpa. Operand 283 states. [2018-06-22 00:49:13,133 INFO ]: Finished minimizeSevpa. Reduced states from 283 to 283. [2018-06-22 00:49:13,134 INFO ]: Start removeUnreachable. Operand 283 states. [2018-06-22 00:49:13,161 INFO ]: Finished removeUnreachable. Reduced from 283 states to 283 states and 553 transitions. [2018-06-22 00:49:13,162 INFO ]: Start accepts. Automaton has 283 states and 553 transitions. Word has length 8 [2018-06-22 00:49:13,163 INFO ]: Finished accepts. word is rejected. [2018-06-22 00:49:13,163 INFO ]: Abstraction has 283 states and 553 transitions. [2018-06-22 00:49:13,163 INFO ]: Interpolant automaton has 4 states. [2018-06-22 00:49:13,163 INFO ]: Start isEmpty. Operand 283 states and 553 transitions. [2018-06-22 00:49:13,172 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 00:49:13,172 INFO ]: Found error trace [2018-06-22 00:49:13,172 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 00:49:13,172 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 00:49:13,173 INFO ]: Analyzing trace with hash 335647549, now seen corresponding path program 1 times [2018-06-22 00:49:13,173 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 00:49:13,173 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 00:49:13,174 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 00:49:13,174 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 00:49:13,174 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 00:49:13,181 INFO ]: Conjunction of SSA is unsat [2018-06-22 00:49:13,385 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 00:49:13,385 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 00:49:13,385 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 00:49:13,386 INFO ]: Interpolant automaton has 4 states [2018-06-22 00:49:13,387 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 00:49:13,387 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 00:49:13,387 INFO ]: Start difference. First operand 283 states and 553 transitions. Second operand 4 states. [2018-06-22 00:49:15,717 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 00:49:15,718 INFO ]: Finished difference Result 423 states and 828 transitions. [2018-06-22 00:49:15,718 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-22 00:49:15,718 INFO ]: Start accepts. Automaton has 4 states. Word has length 9 [2018-06-22 00:49:15,718 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 00:49:15,748 INFO ]: With dead ends: 423 [2018-06-22 00:49:15,748 INFO ]: Without dead ends: 423 [2018-06-22 00:49:15,749 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 00:49:15,749 INFO ]: Start minimizeSevpa. Operand 423 states. [2018-06-22 00:49:15,857 INFO ]: Finished minimizeSevpa. Reduced states from 423 to 423. [2018-06-22 00:49:15,857 INFO ]: Start removeUnreachable. Operand 423 states. [2018-06-22 00:49:15,885 INFO ]: Finished removeUnreachable. Reduced from 423 states to 423 states and 828 transitions. [2018-06-22 00:49:15,885 INFO ]: Start accepts. Automaton has 423 states and 828 transitions. Word has length 9 [2018-06-22 00:49:15,885 INFO ]: Finished accepts. word is rejected. [2018-06-22 00:49:15,885 INFO ]: Abstraction has 423 states and 828 transitions. [2018-06-22 00:49:15,885 INFO ]: Interpolant automaton has 4 states. [2018-06-22 00:49:15,885 INFO ]: Start isEmpty. Operand 423 states and 828 transitions. [2018-06-22 00:49:15,890 INFO ]: Finished isEmpty. Found accepting run of length 11 [2018-06-22 00:49:15,890 INFO ]: Found error trace [2018-06-22 00:49:15,890 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 00:49:15,890 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 00:49:15,891 INFO ]: Analyzing trace with hash -164302653, now seen corresponding path program 1 times [2018-06-22 00:49:15,891 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 00:49:15,891 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 00:49:15,891 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 00:49:15,892 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 00:49:15,892 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 00:49:15,921 INFO ]: Conjunction of SSA is unsat [2018-06-22 00:49:16,137 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 00:49:16,138 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 00:49:16,138 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 00:49:16,138 INFO ]: Interpolant automaton has 4 states [2018-06-22 00:49:16,138 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 00:49:16,138 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 00:49:16,138 INFO ]: Start difference. First operand 423 states and 828 transitions. Second operand 4 states. [2018-06-22 00:49:17,711 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 00:49:17,711 INFO ]: Finished difference Result 562 states and 1102 transitions. [2018-06-22 00:49:17,711 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-22 00:49:17,711 INFO ]: Start accepts. Automaton has 4 states. Word has length 10 [2018-06-22 00:49:17,711 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 00:49:17,762 INFO ]: With dead ends: 562 [2018-06-22 00:49:17,762 INFO ]: Without dead ends: 562 [2018-06-22 00:49:17,763 INFO ]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-06-22 00:49:17,764 INFO ]: Start minimizeSevpa. Operand 562 states. [2018-06-22 00:49:17,865 INFO ]: Finished minimizeSevpa. Reduced states from 562 to 562. [2018-06-22 00:49:17,865 INFO ]: Start removeUnreachable. Operand 562 states. [2018-06-22 00:49:17,882 INFO ]: Finished removeUnreachable. Reduced from 562 states to 562 states and 1102 transitions. [2018-06-22 00:49:17,883 INFO ]: Start accepts. Automaton has 562 states and 1102 transitions. Word has length 10 [2018-06-22 00:49:17,883 INFO ]: Finished accepts. word is rejected. [2018-06-22 00:49:17,883 INFO ]: Abstraction has 562 states and 1102 transitions. [2018-06-22 00:49:17,883 INFO ]: Interpolant automaton has 4 states. [2018-06-22 00:49:17,883 INFO ]: Start isEmpty. Operand 562 states and 1102 transitions. [2018-06-22 00:49:17,920 INFO ]: Finished isEmpty. Found accepting run of length 20 [2018-06-22 00:49:17,920 INFO ]: Found error trace [2018-06-22 00:49:18,010 INFO ]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 00:49:18,010 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 00:49:18,010 INFO ]: Analyzing trace with hash -1022113059, now seen corresponding path program 1 times [2018-06-22 00:49:18,010 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 00:49:18,010 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 00:49:18,011 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 00:49:18,011 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 00:49:18,011 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 00:49:18,091 INFO ]: Conjunction of SSA is unsat [2018-06-22 00:49:18,957 INFO ]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-06-22 00:49:18,957 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 00:49:18,957 INFO ]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-06-22 00:49:18,957 INFO ]: Interpolant automaton has 8 states [2018-06-22 00:49:18,957 INFO ]: Constructing interpolant automaton starting with 8 interpolants. [2018-06-22 00:49:18,957 INFO ]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-06-22 00:49:18,958 INFO ]: Start difference. First operand 562 states and 1102 transitions. Second operand 8 states. [2018-06-22 00:49:31,529 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 00:49:31,529 INFO ]: Finished difference Result 2114 states and 11826 transitions. [2018-06-22 00:49:31,530 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-06-22 00:49:31,530 INFO ]: Start accepts. Automaton has 8 states. Word has length 19 [2018-06-22 00:49:31,530 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 00:49:32,356 INFO ]: With dead ends: 2114 [2018-06-22 00:49:32,356 INFO ]: Without dead ends: 2114 [2018-06-22 00:49:32,356 INFO ]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=85, Invalid=295, Unknown=0, NotChecked=0, Total=380 [2018-06-22 00:49:32,358 INFO ]: Start minimizeSevpa. Operand 2114 states. [2018-06-22 00:49:33,501 INFO ]: Finished minimizeSevpa. Reduced states from 2114 to 1050. [2018-06-22 00:49:33,501 INFO ]: Start removeUnreachable. Operand 1050 states. [2018-06-22 00:49:33,552 INFO ]: Finished removeUnreachable. Reduced from 1050 states to 1050 states and 2301 transitions. [2018-06-22 00:49:33,552 INFO ]: Start accepts. Automaton has 1050 states and 2301 transitions. Word has length 19 [2018-06-22 00:49:33,552 INFO ]: Finished accepts. word is rejected. [2018-06-22 00:49:33,552 INFO ]: Abstraction has 1050 states and 2301 transitions. [2018-06-22 00:49:33,552 INFO ]: Interpolant automaton has 8 states. [2018-06-22 00:49:33,552 INFO ]: Start isEmpty. Operand 1050 states and 2301 transitions. [2018-06-22 00:49:33,592 INFO ]: Finished isEmpty. Found accepting run of length 20 [2018-06-22 00:49:33,592 INFO ]: Found error trace [2018-06-22 00:49:33,592 INFO ]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 00:49:33,592 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 00:49:33,594 INFO ]: Analyzing trace with hash -1023781355, now seen corresponding path program 1 times [2018-06-22 00:49:33,594 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 00:49:33,594 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 00:49:33,594 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 00:49:33,594 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 00:49:33,594 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 00:49:33,664 INFO ]: Conjunction of SSA is unsat [2018-06-22 00:49:34,275 INFO ]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-06-22 00:49:34,275 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 00:49:34,275 INFO ]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-06-22 00:49:34,276 INFO ]: Interpolant automaton has 8 states [2018-06-22 00:49:34,276 INFO ]: Constructing interpolant automaton starting with 8 interpolants. [2018-06-22 00:49:34,276 INFO ]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-06-22 00:49:34,276 INFO ]: Start difference. First operand 1050 states and 2301 transitions. Second operand 8 states. [2018-06-22 00:49:43,331 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 00:49:43,332 INFO ]: Finished difference Result 4148 states and 28756 transitions. [2018-06-22 00:49:43,332 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-06-22 00:49:43,332 INFO ]: Start accepts. Automaton has 8 states. Word has length 19 [2018-06-22 00:49:43,332 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 00:49:46,304 INFO ]: With dead ends: 4148 [2018-06-22 00:49:46,304 INFO ]: Without dead ends: 3956 [2018-06-22 00:49:46,304 INFO ]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=85, Invalid=295, Unknown=0, NotChecked=0, Total=380 [2018-06-22 00:49:46,307 INFO ]: Start minimizeSevpa. Operand 3956 states. [2018-06-22 00:49:50,962 INFO ]: Finished minimizeSevpa. Reduced states from 3956 to 2008. [2018-06-22 00:49:50,963 INFO ]: Start removeUnreachable. Operand 2008 states. [2018-06-22 00:49:51,346 INFO ]: Finished removeUnreachable. Reduced from 2008 states to 2008 states and 4773 transitions. [2018-06-22 00:49:51,347 INFO ]: Start accepts. Automaton has 2008 states and 4773 transitions. Word has length 19 [2018-06-22 00:49:51,347 INFO ]: Finished accepts. word is rejected. [2018-06-22 00:49:51,347 INFO ]: Abstraction has 2008 states and 4773 transitions. [2018-06-22 00:49:51,347 INFO ]: Interpolant automaton has 8 states. [2018-06-22 00:49:51,347 INFO ]: Start isEmpty. Operand 2008 states and 4773 transitions. [2018-06-22 00:49:51,377 INFO ]: Finished isEmpty. Found accepting run of length 20 [2018-06-22 00:49:51,377 INFO ]: Found error trace [2018-06-22 00:49:51,378 INFO ]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 00:49:51,378 INFO ]: === Iteration 6 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 00:49:51,379 INFO ]: Analyzing trace with hash 1518992392, now seen corresponding path program 1 times [2018-06-22 00:49:51,379 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 00:49:51,379 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 00:49:51,380 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 00:49:51,380 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 00:49:51,380 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 00:49:51,436 INFO ]: Conjunction of SSA is unsat [2018-06-22 00:49:51,610 INFO ]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 00:49:51,610 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 00:49:51,610 INFO ]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-06-22 00:49:51,611 INFO ]: Interpolant automaton has 7 states [2018-06-22 00:49:51,611 INFO ]: Constructing interpolant automaton starting with 7 interpolants. [2018-06-22 00:49:51,611 INFO ]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-06-22 00:49:51,611 INFO ]: Start difference. First operand 2008 states and 4773 transitions. Second operand 7 states. [2018-06-22 00:49:58,140 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 00:49:58,140 INFO ]: Finished difference Result 6177 states and 39276 transitions. [2018-06-22 00:49:58,140 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-06-22 00:49:58,140 INFO ]: Start accepts. Automaton has 7 states. Word has length 19 [2018-06-22 00:49:58,141 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 00:50:00,729 INFO ]: With dead ends: 6177 [2018-06-22 00:50:00,729 INFO ]: Without dead ends: 6127 [2018-06-22 00:50:00,729 INFO ]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2018-06-22 00:50:00,732 INFO ]: Start minimizeSevpa. Operand 6127 states. Received shutdown request... [2018-06-22 00:50:04,296 WARN ]: Verification canceled [2018-06-22 00:50:04,300 WARN ]: Timeout [2018-06-22 00:50:04,300 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 12:50:04 BoogieIcfgContainer [2018-06-22 00:50:04,300 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 00:50:04,301 INFO ]: Toolchain (without parser) took 57408.24 ms. Allocated memory was 309.3 MB in the beginning and 1.9 GB in the end (delta: 1.6 GB). Free memory was 217.9 MB in the beginning and 1.5 GB in the end (delta: -1.2 GB). Peak memory consumption was 1.5 GB. Max. memory is 3.6 GB. [2018-06-22 00:50:04,302 INFO ]: SmtParser took 0.08 ms. Allocated memory is still 309.3 MB. Free memory is still 274.8 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 00:50:04,303 INFO ]: ChcToBoogie took 148.50 ms. Allocated memory is still 309.3 MB. Free memory was 216.9 MB in the beginning and 211.9 MB in the end (delta: 5.0 MB). Peak memory consumption was 5.0 MB. Max. memory is 3.6 GB. [2018-06-22 00:50:04,303 INFO ]: Boogie Preprocessor took 84.81 ms. Allocated memory is still 309.3 MB. Free memory was 211.9 MB in the beginning and 208.9 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. [2018-06-22 00:50:04,304 INFO ]: RCFGBuilder took 2253.78 ms. Allocated memory was 309.3 MB in the beginning and 362.3 MB in the end (delta: 53.0 MB). Free memory was 208.9 MB in the beginning and 331.2 MB in the end (delta: -122.3 MB). Peak memory consumption was 50.0 MB. Max. memory is 3.6 GB. [2018-06-22 00:50:04,304 INFO ]: TraceAbstraction took 54904.73 ms. Allocated memory was 362.3 MB in the beginning and 1.9 GB in the end (delta: 1.6 GB). Free memory was 331.2 MB in the beginning and 1.5 GB in the end (delta: -1.1 GB). Peak memory consumption was 1.6 GB. Max. memory is 3.6 GB. [2018-06-22 00:50:04,309 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 309.3 MB. Free memory is still 274.8 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 148.50 ms. Allocated memory is still 309.3 MB. Free memory was 216.9 MB in the beginning and 211.9 MB in the end (delta: 5.0 MB). Peak memory consumption was 5.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 84.81 ms. Allocated memory is still 309.3 MB. Free memory was 211.9 MB in the beginning and 208.9 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 2253.78 ms. Allocated memory was 309.3 MB in the beginning and 362.3 MB in the end (delta: 53.0 MB). Free memory was 208.9 MB in the beginning and 331.2 MB in the end (delta: -122.3 MB). Peak memory consumption was 50.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 54904.73 ms. Allocated memory was 362.3 MB in the beginning and 1.9 GB in the end (delta: 1.6 GB). Free memory was 331.2 MB in the beginning and 1.5 GB in the end (delta: -1.1 GB). Peak memory consumption was 1.6 GB. Max. memory is 3.6 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [UNKNOWN] : Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 0). Cancelled while executing MinimizeSevpa. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 146 locations, 1 error locations. TIMEOUT Result, 54.8s OverallTime, 6 OverallIterations, 2 TraceHistogramMax, 41.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 4813 SDtfs, 1314 SDslu, 12098 SDs, 0 SdLazy, 18056 SolverSat, 4711 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 27.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 68 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 2.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2008occurred in iteration=5, 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: 10.2s AutomataMinimizationTime, 6 MinimizatonAttempts, 3012 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.3s InterpolantComputationTime, 84 NumberOfCodeBlocks, 84 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 78 ConstructedInterpolants, 0 QuantifiedInterpolants, 2970 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 13/13 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/incremental.36.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_00-50-04-323.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/incremental.36.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_00-50-04-323.csv Completed graceful shutdown