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/eldarica-misc/LIA/llreve/nested-while_merged_unsafe.c-1.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 11:03:00,007 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 11:03:00,009 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 11:03:00,020 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 11:03:00,020 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 11:03:00,021 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 11:03:00,022 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 11:03:00,026 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 11:03:00,028 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 11:03:00,028 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 11:03:00,030 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 11:03:00,031 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 11:03:00,032 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 11:03:00,033 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 11:03:00,033 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 11:03:00,036 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 11:03:00,038 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 11:03:00,051 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 11:03:00,053 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 11:03:00,054 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 11:03:00,055 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 11:03:00,057 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 11:03:00,057 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 11:03:00,057 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 11:03:00,058 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 11:03:00,059 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 11:03:00,065 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 11:03:00,066 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 11:03:00,067 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 11:03:00,067 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 11:03:00,068 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 11:03:00,068 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 11:03:00,068 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 11:03:00,074 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 11:03:00,075 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 11:03:00,075 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 11:03:00,095 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 11:03:00,095 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 11:03:00,096 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 11:03:00,096 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 11:03:00,097 INFO L131 SettingsManager]: Preferences of ChcToBoogie differ from their defaults: [2018-06-22 11:03:00,097 INFO L133 SettingsManager]: * Use one large procedure with gotos to replace tail recursive calls=false [2018-06-22 11:03:00,097 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 11:03:00,097 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 11:03:00,097 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 11:03:00,098 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 11:03:00,101 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 11:03:00,102 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 11:03:00,102 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 11:03:00,102 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 11:03:00,102 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 11:03:00,102 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 11:03:00,103 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 11:03:00,103 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 11:03:00,103 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 11:03:00,104 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 11:03:00,105 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 11:03:00,151 INFO ]: Repository-Root is: /tmp [2018-06-22 11:03:00,165 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 11:03:00,170 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 11:03:00,172 INFO ]: Initializing SmtParser... [2018-06-22 11:03:00,172 INFO ]: SmtParser initialized [2018-06-22 11:03:00,173 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/eldarica-misc/LIA/llreve/nested-while_merged_unsafe.c-1.smt2 [2018-06-22 11:03:00,174 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 11:03:00,260 INFO ]: Executing SMT file /storage/chc-comp/eldarica-misc/LIA/llreve/nested-while_merged_unsafe.c-1.smt2 unknown [2018-06-22 11:03:00,482 INFO ]: Succesfully executed SMT file /storage/chc-comp/eldarica-misc/LIA/llreve/nested-while_merged_unsafe.c-1.smt2 [2018-06-22 11:03:00,487 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 11:03:00,493 INFO ]: Walking toolchain with 4 elements. [2018-06-22 11:03:00,493 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 11:03:00,493 INFO ]: Initializing ChcToBoogie... [2018-06-22 11:03:00,493 INFO ]: ChcToBoogie initialized [2018-06-22 11:03:00,497 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 11:03:00" (1/1) ... [2018-06-22 11:03:00,538 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:03:00 Unit [2018-06-22 11:03:00,539 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 11:03:00,539 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 11:03:00,539 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 11:03:00,539 INFO ]: Boogie Preprocessor initialized [2018-06-22 11:03:00,562 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:03:00" (1/1) ... [2018-06-22 11:03:00,562 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:03:00" (1/1) ... [2018-06-22 11:03:00,570 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:03:00" (1/1) ... [2018-06-22 11:03:00,570 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:03:00" (1/1) ... [2018-06-22 11:03:00,574 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:03:00" (1/1) ... [2018-06-22 11:03:00,576 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:03:00" (1/1) ... [2018-06-22 11:03:00,577 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:03:00" (1/1) ... [2018-06-22 11:03:00,581 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 11:03:00,581 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 11:03:00,581 INFO ]: Initializing RCFGBuilder... [2018-06-22 11:03:00,581 INFO ]: RCFGBuilder initialized [2018-06-22 11:03:00,582 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:03:00" (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 11:03:00,605 INFO ]: Specification and implementation of procedure False given in one single declaration [2018-06-22 11:03:00,605 INFO ]: Found specification of procedure False [2018-06-22 11:03:00,605 INFO ]: Found implementation of procedure False [2018-06-22 11:03:00,605 INFO ]: Specification and implementation of procedure inv_main13 given in one single declaration [2018-06-22 11:03:00,605 INFO ]: Found specification of procedure inv_main13 [2018-06-22 11:03:00,605 INFO ]: Found implementation of procedure inv_main13 [2018-06-22 11:03:00,605 INFO ]: Specification and implementation of procedure inv_main5 given in one single declaration [2018-06-22 11:03:00,605 INFO ]: Found specification of procedure inv_main5 [2018-06-22 11:03:00,605 INFO ]: Found implementation of procedure inv_main5 [2018-06-22 11:03:00,606 INFO ]: Specification and implementation of procedure inv_main9 given in one single declaration [2018-06-22 11:03:00,606 INFO ]: Found specification of procedure inv_main9 [2018-06-22 11:03:00,606 INFO ]: Found implementation of procedure inv_main9 [2018-06-22 11:03:00,606 INFO ]: Specification and implementation of procedure inv_main16 given in one single declaration [2018-06-22 11:03:00,606 INFO ]: Found specification of procedure inv_main16 [2018-06-22 11:03:00,606 INFO ]: Found implementation of procedure inv_main16 [2018-06-22 11:03:00,606 INFO ]: Specification and implementation of procedure inv_main2 given in one single declaration [2018-06-22 11:03:00,606 INFO ]: Found specification of procedure inv_main2 [2018-06-22 11:03:00,606 INFO ]: Found implementation of procedure inv_main2 [2018-06-22 11:03:00,606 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 11:03:00,606 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 11:03:00,606 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 11:03:00,899 INFO ]: Using library mode [2018-06-22 11:03:00,900 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 11:03:00 BoogieIcfgContainer [2018-06-22 11:03:00,900 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 11:03:00,907 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 11:03:00,907 INFO ]: Initializing TraceAbstraction... [2018-06-22 11:03:00,910 INFO ]: TraceAbstraction initialized [2018-06-22 11:03:00,910 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 11:03:00" (1/3) ... [2018-06-22 11:03:00,911 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a82a1e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 11:03:00, skipping insertion in model container [2018-06-22 11:03:00,911 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:03:00" (2/3) ... [2018-06-22 11:03:00,911 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a82a1e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 11:03:00, skipping insertion in model container [2018-06-22 11:03:00,911 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 11:03:00" (3/3) ... [2018-06-22 11:03:00,913 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 11:03:00,924 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 11:03:00,934 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 11:03:00,968 INFO ]: Using default assertion order modulation [2018-06-22 11:03:00,968 INFO ]: Interprodecural is true [2018-06-22 11:03:00,969 INFO ]: Hoare is false [2018-06-22 11:03:00,969 INFO ]: Compute interpolants for FPandBP [2018-06-22 11:03:00,969 INFO ]: Backedges is TWOTRACK [2018-06-22 11:03:00,969 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 11:03:00,969 INFO ]: Difference is false [2018-06-22 11:03:00,969 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 11:03:00,969 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 11:03:00,982 INFO ]: Start isEmpty. Operand 33 states. [2018-06-22 11:03:01,000 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-22 11:03:01,000 INFO ]: Found error trace [2018-06-22 11:03:01,001 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:03:01,001 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:03:01,006 INFO ]: Analyzing trace with hash 1900262336, now seen corresponding path program 1 times [2018-06-22 11:03:01,007 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:03:01,008 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:03:01,042 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:03:01,043 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:03:01,043 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:03:01,081 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:03:01,183 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 11:03:01,185 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 11:03:01,186 INFO ]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-06-22 11:03:01,187 INFO ]: Interpolant automaton has 5 states [2018-06-22 11:03:01,197 INFO ]: Constructing interpolant automaton starting with 5 interpolants. [2018-06-22 11:03:01,197 INFO ]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-06-22 11:03:01,199 INFO ]: Start difference. First operand 33 states. Second operand 5 states. [2018-06-22 11:03:01,285 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:03:01,286 INFO ]: Finished difference Result 35 states and 44 transitions. [2018-06-22 11:03:01,287 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-22 11:03:01,288 INFO ]: Start accepts. Automaton has 5 states. Word has length 17 [2018-06-22 11:03:01,288 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:03:01,297 INFO ]: With dead ends: 35 [2018-06-22 11:03:01,297 INFO ]: Without dead ends: 33 [2018-06-22 11:03:01,299 INFO ]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-06-22 11:03:01,311 INFO ]: Start minimizeSevpa. Operand 33 states. [2018-06-22 11:03:01,334 INFO ]: Finished minimizeSevpa. Reduced states from 33 to 33. [2018-06-22 11:03:01,335 INFO ]: Start removeUnreachable. Operand 33 states. [2018-06-22 11:03:01,337 INFO ]: Finished removeUnreachable. Reduced from 33 states to 33 states and 42 transitions. [2018-06-22 11:03:01,338 INFO ]: Start accepts. Automaton has 33 states and 42 transitions. Word has length 17 [2018-06-22 11:03:01,338 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:03:01,338 INFO ]: Abstraction has 33 states and 42 transitions. [2018-06-22 11:03:01,338 INFO ]: Interpolant automaton has 5 states. [2018-06-22 11:03:01,338 INFO ]: Start isEmpty. Operand 33 states and 42 transitions. [2018-06-22 11:03:01,340 INFO ]: Finished isEmpty. Found accepting run of length 22 [2018-06-22 11:03:01,340 INFO ]: Found error trace [2018-06-22 11:03:01,341 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:03:01,341 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:03:01,341 INFO ]: Analyzing trace with hash -1890054934, now seen corresponding path program 1 times [2018-06-22 11:03:01,341 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:03:01,341 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:03:01,342 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:03:01,342 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:03:01,342 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:03:01,369 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:03:01,517 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 11:03:01,517 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 11:03:01,517 INFO ]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-06-22 11:03:01,518 INFO ]: Interpolant automaton has 5 states [2018-06-22 11:03:01,519 INFO ]: Constructing interpolant automaton starting with 5 interpolants. [2018-06-22 11:03:01,519 INFO ]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-06-22 11:03:01,519 INFO ]: Start difference. First operand 33 states and 42 transitions. Second operand 5 states. [2018-06-22 11:03:01,809 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:03:01,809 INFO ]: Finished difference Result 35 states and 44 transitions. [2018-06-22 11:03:01,809 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-22 11:03:01,809 INFO ]: Start accepts. Automaton has 5 states. Word has length 21 [2018-06-22 11:03:01,809 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:03:01,810 INFO ]: With dead ends: 35 [2018-06-22 11:03:01,810 INFO ]: Without dead ends: 35 [2018-06-22 11:03:01,811 INFO ]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-06-22 11:03:01,811 INFO ]: Start minimizeSevpa. Operand 35 states. [2018-06-22 11:03:01,817 INFO ]: Finished minimizeSevpa. Reduced states from 35 to 33. [2018-06-22 11:03:01,817 INFO ]: Start removeUnreachable. Operand 33 states. [2018-06-22 11:03:01,818 INFO ]: Finished removeUnreachable. Reduced from 33 states to 33 states and 42 transitions. [2018-06-22 11:03:01,818 INFO ]: Start accepts. Automaton has 33 states and 42 transitions. Word has length 21 [2018-06-22 11:03:01,819 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:03:01,819 INFO ]: Abstraction has 33 states and 42 transitions. [2018-06-22 11:03:01,819 INFO ]: Interpolant automaton has 5 states. [2018-06-22 11:03:01,819 INFO ]: Start isEmpty. Operand 33 states and 42 transitions. [2018-06-22 11:03:01,820 INFO ]: Finished isEmpty. Found accepting run of length 26 [2018-06-22 11:03:01,820 INFO ]: Found error trace [2018-06-22 11:03:01,820 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:03:01,820 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:03:01,820 INFO ]: Analyzing trace with hash -1251156185, now seen corresponding path program 1 times [2018-06-22 11:03:01,820 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:03:01,820 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:03:01,821 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:03:01,821 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:03:01,821 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:03:01,844 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:03:01,898 INFO ]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 11:03:01,898 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 11:03:01,898 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 11:03:01,899 INFO ]: Interpolant automaton has 4 states [2018-06-22 11:03:01,899 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 11:03:01,899 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 11:03:01,899 INFO ]: Start difference. First operand 33 states and 42 transitions. Second operand 4 states. [2018-06-22 11:03:01,938 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:03:01,938 INFO ]: Finished difference Result 35 states and 43 transitions. [2018-06-22 11:03:01,939 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 11:03:01,939 INFO ]: Start accepts. Automaton has 4 states. Word has length 25 [2018-06-22 11:03:01,939 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:03:01,940 INFO ]: With dead ends: 35 [2018-06-22 11:03:01,940 INFO ]: Without dead ends: 32 [2018-06-22 11:03:01,940 INFO ]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 11:03:01,941 INFO ]: Start minimizeSevpa. Operand 32 states. [2018-06-22 11:03:01,946 INFO ]: Finished minimizeSevpa. Reduced states from 32 to 32. [2018-06-22 11:03:01,946 INFO ]: Start removeUnreachable. Operand 32 states. [2018-06-22 11:03:01,947 INFO ]: Finished removeUnreachable. Reduced from 32 states to 32 states and 39 transitions. [2018-06-22 11:03:01,948 INFO ]: Start accepts. Automaton has 32 states and 39 transitions. Word has length 25 [2018-06-22 11:03:01,948 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:03:01,948 INFO ]: Abstraction has 32 states and 39 transitions. [2018-06-22 11:03:01,948 INFO ]: Interpolant automaton has 4 states. [2018-06-22 11:03:01,948 INFO ]: Start isEmpty. Operand 32 states and 39 transitions. [2018-06-22 11:03:01,949 INFO ]: Finished isEmpty. Found accepting run of length 30 [2018-06-22 11:03:01,949 INFO ]: Found error trace [2018-06-22 11:03:01,949 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:03:01,949 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:03:01,949 INFO ]: Analyzing trace with hash -43863343, now seen corresponding path program 1 times [2018-06-22 11:03:01,949 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:03:01,949 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:03:01,953 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:03:01,953 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:03:01,953 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:03:01,972 INFO ]: Conjunction of SSA is sat [2018-06-22 11:03:01,975 INFO ]: Counterexample might be feasible [2018-06-22 11:03:01,990 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 11:03:01 BoogieIcfgContainer [2018-06-22 11:03:01,990 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 11:03:01,992 INFO ]: Toolchain (without parser) took 1505.16 ms. Allocated memory is still 309.3 MB. Free memory was 263.7 MB in the beginning and 208.6 MB in the end (delta: 55.2 MB). Peak memory consumption was 55.2 MB. Max. memory is 3.6 GB. [2018-06-22 11:03:01,994 INFO ]: SmtParser took 0.61 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 11:03:01,994 INFO ]: ChcToBoogie took 45.66 ms. Allocated memory is still 309.3 MB. Free memory was 263.7 MB in the beginning and 261.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 11:03:01,995 INFO ]: Boogie Preprocessor took 41.31 ms. Allocated memory is still 309.3 MB. Free memory was 261.7 MB in the beginning and 260.7 MB in the end (delta: 996.3 kB). Peak memory consumption was 996.3 kB. Max. memory is 3.6 GB. [2018-06-22 11:03:01,995 INFO ]: RCFGBuilder took 318.53 ms. Allocated memory is still 309.3 MB. Free memory was 260.7 MB in the beginning and 249.7 MB in the end (delta: 11.0 MB). Peak memory consumption was 11.0 MB. Max. memory is 3.6 GB. [2018-06-22 11:03:01,996 INFO ]: TraceAbstraction took 1083.64 ms. Allocated memory is still 309.3 MB. Free memory was 249.7 MB in the beginning and 208.6 MB in the end (delta: 41.1 MB). Peak memory consumption was 41.1 MB. Max. memory is 3.6 GB. [2018-06-22 11:03:02,001 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.61 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 45.66 ms. Allocated memory is still 309.3 MB. Free memory was 263.7 MB in the beginning and 261.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 41.31 ms. Allocated memory is still 309.3 MB. Free memory was 261.7 MB in the beginning and 260.7 MB in the end (delta: 996.3 kB). Peak memory consumption was 996.3 kB. Max. memory is 3.6 GB. * RCFGBuilder took 318.53 ms. Allocated memory is still 309.3 MB. Free memory was 260.7 MB in the beginning and 249.7 MB in the end (delta: 11.0 MB). Peak memory consumption was 11.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 1083.64 ms. Allocated memory is still 309.3 MB. Free memory was 249.7 MB in the beginning and 208.6 MB in the end (delta: 41.1 MB). Peak memory consumption was 41.1 MB. Max. memory is 3.6 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [UNKNOWN] : assertion can be violated assertion can be violated We found a FailurePath: [L0] CALL call False(); [L0] assume !(hbv_False_1_Int == hbv_False_2_Int); [L0] CALL call inv_main13(hbv_False_3_Int, hbv_False_4_Int, hbv_False_5_Int, hbv_False_6_Int, hbv_False_1_Int, hbv_False_2_Int, hbv_False_7_Int, hbv_False_8_Int); [L0] assume !(0 <= hhv_inv_main13_2_Int + -1 * hhv_inv_main13_7_Int + -1); [L0] CALL call inv_main5(hhv_inv_main13_0_Int, hhv_inv_main13_1_Int, hhv_inv_main13_2_Int, hhv_inv_main13_3_Int, hhv_inv_main13_4_Int, hhv_inv_main13_5_Int, hhv_inv_main13_6_Int, hhv_inv_main13_7_Int); [L0] assume !(0 <= hhv_inv_main5_7_Int + -1 * hhv_inv_main5_2_Int + -1); [L0] CALL call inv_main16(hhv_inv_main5_0_Int, hhv_inv_main5_1_Int, hhv_inv_main5_2_Int, hhv_inv_main5_3_Int, hhv_inv_main5_4_Int, hhv_inv_main5_5_Int, hhv_inv_main5_6_Int, hhv_inv_main5_7_Int); [L0] assume (hhv_inv_main16_7_Int == hbv_inv_main16_1_Int + 1 && hhv_inv_main16_5_Int == hbv_inv_main16_2_Int + -2) && 0 <= hhv_inv_main16_2_Int + -1 * hbv_inv_main16_1_Int + -1; [L0] CALL call inv_main5(hhv_inv_main16_0_Int, hhv_inv_main16_1_Int, hhv_inv_main16_2_Int, hhv_inv_main16_3_Int, hhv_inv_main16_4_Int, hbv_inv_main16_2_Int, hhv_inv_main16_6_Int, hbv_inv_main16_1_Int); [L0] assume !(0 <= hhv_inv_main5_1_Int + -1 * hhv_inv_main5_6_Int + -1) && !(0 <= hhv_inv_main5_6_Int + -1 * hhv_inv_main5_1_Int + -1); [L0] CALL call inv_main9(hhv_inv_main5_0_Int, hhv_inv_main5_1_Int, hhv_inv_main5_2_Int, hhv_inv_main5_3_Int, hhv_inv_main5_4_Int, hhv_inv_main5_5_Int, hhv_inv_main5_6_Int, hhv_inv_main5_7_Int); [L0] assume (((((hhv_inv_main9_1_Int == hhv_inv_main9_0_Int && hhv_inv_main9_6_Int == 1) && hhv_inv_main9_4_Int == hhv_inv_main9_3_Int + -2 + 1) && hhv_inv_main9_2_Int == hhv_inv_main9_0_Int) && hhv_inv_main9_5_Int == hhv_inv_main9_3_Int) && 0 <= hhv_inv_main9_0_Int + -1) && hhv_inv_main9_7_Int == 0; [L0] CALL call inv_main2(); [L0] assume true; [L0] RET call inv_main2(); [L0] RET call inv_main9(hhv_inv_main5_0_Int, hhv_inv_main5_1_Int, hhv_inv_main5_2_Int, hhv_inv_main5_3_Int, hhv_inv_main5_4_Int, hhv_inv_main5_5_Int, hhv_inv_main5_6_Int, hhv_inv_main5_7_Int); [L0] RET call inv_main5(hhv_inv_main16_0_Int, hhv_inv_main16_1_Int, hhv_inv_main16_2_Int, hhv_inv_main16_3_Int, hhv_inv_main16_4_Int, hbv_inv_main16_2_Int, hhv_inv_main16_6_Int, hbv_inv_main16_1_Int); [L0] RET call inv_main16(hhv_inv_main5_0_Int, hhv_inv_main5_1_Int, hhv_inv_main5_2_Int, hhv_inv_main5_3_Int, hhv_inv_main5_4_Int, hhv_inv_main5_5_Int, hhv_inv_main5_6_Int, hhv_inv_main5_7_Int); [L0] RET call inv_main5(hhv_inv_main13_0_Int, hhv_inv_main13_1_Int, hhv_inv_main13_2_Int, hhv_inv_main13_3_Int, hhv_inv_main13_4_Int, hhv_inv_main13_5_Int, hhv_inv_main13_6_Int, hhv_inv_main13_7_Int); [L0] RET call inv_main13(hbv_False_3_Int, hbv_False_4_Int, hbv_False_5_Int, hbv_False_6_Int, hbv_False_1_Int, hbv_False_2_Int, hbv_False_7_Int, hbv_False_8_Int); [L0] RET call False(); [L0] assert false; - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 33 locations, 1 error locations. UNSAFE Result, 1.0s OverallTime, 4 OverallIterations, 2 TraceHistogramMax, 0.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 112 SDtfs, 3 SDslu, 264 SDs, 0 SdLazy, 46 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred in iteration=0, 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, 3 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 92 NumberOfCodeBlocks, 92 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 60 ConstructedInterpolants, 0 QuantifiedInterpolants, 2888 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 3/3 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/nested-while_merged_unsafe.c-1.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_11-03-02-022.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/nested-while_merged_unsafe.c-1.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_11-03-02-022.csv Received shutdown request...