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/reve/007-horn.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 01:23:27,078 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 01:23:27,080 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 01:23:27,091 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 01:23:27,091 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 01:23:27,092 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 01:23:27,094 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 01:23:27,096 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 01:23:27,097 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 01:23:27,098 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 01:23:27,099 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 01:23:27,099 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 01:23:27,100 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 01:23:27,101 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 01:23:27,102 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 01:23:27,103 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 01:23:27,104 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 01:23:27,106 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 01:23:27,108 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 01:23:27,109 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 01:23:27,110 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 01:23:27,112 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 01:23:27,113 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 01:23:27,113 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 01:23:27,114 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 01:23:27,115 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 01:23:27,115 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 01:23:27,116 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 01:23:27,117 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 01:23:27,117 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 01:23:27,118 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 01:23:27,119 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 01:23:27,119 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 01:23:27,120 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 01:23:27,121 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 01:23:27,121 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-22 01:23:27,134 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 01:23:27,134 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 01:23:27,135 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 01:23:27,135 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 01:23:27,136 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 01:23:27,136 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 01:23:27,136 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 01:23:27,137 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 01:23:27,137 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 01:23:27,137 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 01:23:27,137 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 01:23:27,137 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 01:23:27,137 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 01:23:27,138 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 01:23:27,138 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 01:23:27,138 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 01:23:27,138 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 01:23:27,139 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 01:23:27,140 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 01:23:27,188 INFO ]: Repository-Root is: /tmp [2018-06-22 01:23:27,202 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 01:23:27,207 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 01:23:27,209 INFO ]: Initializing SmtParser... [2018-06-22 01:23:27,209 INFO ]: SmtParser initialized [2018-06-22 01:23:27,209 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/eldarica-misc/LIA/reve/007-horn.smt2 [2018-06-22 01:23:27,211 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 01:23:27,300 INFO ]: Executing SMT file /storage/chc-comp/eldarica-misc/LIA/reve/007-horn.smt2 unknown [2018-06-22 01:23:27,482 INFO ]: Succesfully executed SMT file /storage/chc-comp/eldarica-misc/LIA/reve/007-horn.smt2 [2018-06-22 01:23:27,492 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 01:23:27,501 INFO ]: Walking toolchain with 4 elements. [2018-06-22 01:23:27,501 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 01:23:27,501 INFO ]: Initializing ChcToBoogie... [2018-06-22 01:23:27,502 INFO ]: ChcToBoogie initialized [2018-06-22 01:23:27,505 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 01:23:27" (1/1) ... [2018-06-22 01:23:27,558 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:23:27 Unit [2018-06-22 01:23:27,558 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 01:23:27,559 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 01:23:27,559 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 01:23:27,559 INFO ]: Boogie Preprocessor initialized [2018-06-22 01:23:27,580 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:23:27" (1/1) ... [2018-06-22 01:23:27,580 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:23:27" (1/1) ... [2018-06-22 01:23:27,587 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:23:27" (1/1) ... [2018-06-22 01:23:27,587 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:23:27" (1/1) ... [2018-06-22 01:23:27,590 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:23:27" (1/1) ... [2018-06-22 01:23:27,591 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:23:27" (1/1) ... [2018-06-22 01:23:27,592 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:23:27" (1/1) ... [2018-06-22 01:23:27,593 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 01:23:27,594 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 01:23:27,594 INFO ]: Initializing RCFGBuilder... [2018-06-22 01:23:27,594 INFO ]: RCFGBuilder initialized [2018-06-22 01:23:27,595 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:23:27" (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 01:23:27,609 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-22 01:23:27,609 INFO ]: Found specification of procedure gotoProc [2018-06-22 01:23:27,609 INFO ]: Found implementation of procedure gotoProc [2018-06-22 01:23:27,609 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 01:23:27,609 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 01:23:27,609 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 01:23:27,926 INFO ]: Using library mode [2018-06-22 01:23:27,926 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 01:23:27 BoogieIcfgContainer [2018-06-22 01:23:27,926 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 01:23:27,935 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 01:23:27,936 INFO ]: Initializing TraceAbstraction... [2018-06-22 01:23:27,939 INFO ]: TraceAbstraction initialized [2018-06-22 01:23:27,939 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 01:23:27" (1/3) ... [2018-06-22 01:23:27,940 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b59fda3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 01:23:27, skipping insertion in model container [2018-06-22 01:23:27,940 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:23:27" (2/3) ... [2018-06-22 01:23:27,940 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b59fda3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 01:23:27, skipping insertion in model container [2018-06-22 01:23:27,940 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 01:23:27" (3/3) ... [2018-06-22 01:23:27,942 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 01:23:27,951 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 01:23:27,958 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 01:23:28,001 INFO ]: Using default assertion order modulation [2018-06-22 01:23:28,001 INFO ]: Interprodecural is true [2018-06-22 01:23:28,001 INFO ]: Hoare is false [2018-06-22 01:23:28,001 INFO ]: Compute interpolants for FPandBP [2018-06-22 01:23:28,001 INFO ]: Backedges is TWOTRACK [2018-06-22 01:23:28,001 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 01:23:28,001 INFO ]: Difference is false [2018-06-22 01:23:28,002 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 01:23:28,002 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 01:23:28,015 INFO ]: Start isEmpty. Operand 10 states. [2018-06-22 01:23:28,024 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-22 01:23:28,024 INFO ]: Found error trace [2018-06-22 01:23:28,025 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:23:28,026 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:23:28,030 INFO ]: Analyzing trace with hash -204663978, now seen corresponding path program 1 times [2018-06-22 01:23:28,032 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:23:28,033 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:23:28,101 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:23:28,101 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:23:28,101 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:23:28,152 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:23:28,234 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 01:23:28,237 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 01:23:28,237 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-22 01:23:28,239 INFO ]: Interpolant automaton has 3 states [2018-06-22 01:23:28,250 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-22 01:23:28,251 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-22 01:23:28,253 INFO ]: Start difference. First operand 10 states. Second operand 3 states. [2018-06-22 01:23:28,327 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:23:28,327 INFO ]: Finished difference Result 9 states and 13 transitions. [2018-06-22 01:23:28,327 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-22 01:23:28,329 INFO ]: Start accepts. Automaton has 3 states. Word has length 7 [2018-06-22 01:23:28,329 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:23:28,339 INFO ]: With dead ends: 9 [2018-06-22 01:23:28,339 INFO ]: Without dead ends: 9 [2018-06-22 01:23:28,344 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 01:23:28,371 INFO ]: Start minimizeSevpa. Operand 9 states. [2018-06-22 01:23:28,388 INFO ]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-06-22 01:23:28,389 INFO ]: Start removeUnreachable. Operand 9 states. [2018-06-22 01:23:28,390 INFO ]: Finished removeUnreachable. Reduced from 9 states to 9 states and 13 transitions. [2018-06-22 01:23:28,392 INFO ]: Start accepts. Automaton has 9 states and 13 transitions. Word has length 7 [2018-06-22 01:23:28,392 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:23:28,392 INFO ]: Abstraction has 9 states and 13 transitions. [2018-06-22 01:23:28,392 INFO ]: Interpolant automaton has 3 states. [2018-06-22 01:23:28,392 INFO ]: Start isEmpty. Operand 9 states and 13 transitions. [2018-06-22 01:23:28,392 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-22 01:23:28,392 INFO ]: Found error trace [2018-06-22 01:23:28,392 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:23:28,393 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:23:28,393 INFO ]: Analyzing trace with hash -2053405102, now seen corresponding path program 1 times [2018-06-22 01:23:28,393 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:23:28,393 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:23:28,394 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:23:28,394 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:23:28,394 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:23:28,411 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:23:28,456 INFO ]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 01:23:28,457 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 01:23:28,457 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-22 01:23:28,458 INFO ]: Interpolant automaton has 3 states [2018-06-22 01:23:28,459 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-22 01:23:28,459 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-22 01:23:28,459 INFO ]: Start difference. First operand 9 states and 13 transitions. Second operand 3 states. [2018-06-22 01:23:28,504 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:23:28,504 INFO ]: Finished difference Result 11 states and 19 transitions. [2018-06-22 01:23:28,504 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-22 01:23:28,504 INFO ]: Start accepts. Automaton has 3 states. Word has length 8 [2018-06-22 01:23:28,505 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:23:28,505 INFO ]: With dead ends: 11 [2018-06-22 01:23:28,505 INFO ]: Without dead ends: 11 [2018-06-22 01:23:28,506 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 01:23:28,506 INFO ]: Start minimizeSevpa. Operand 11 states. [2018-06-22 01:23:28,507 INFO ]: Finished minimizeSevpa. Reduced states from 11 to 9. [2018-06-22 01:23:28,507 INFO ]: Start removeUnreachable. Operand 9 states. [2018-06-22 01:23:28,508 INFO ]: Finished removeUnreachable. Reduced from 9 states to 9 states and 13 transitions. [2018-06-22 01:23:28,508 INFO ]: Start accepts. Automaton has 9 states and 13 transitions. Word has length 8 [2018-06-22 01:23:28,508 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:23:28,508 INFO ]: Abstraction has 9 states and 13 transitions. [2018-06-22 01:23:28,508 INFO ]: Interpolant automaton has 3 states. [2018-06-22 01:23:28,508 INFO ]: Start isEmpty. Operand 9 states and 13 transitions. [2018-06-22 01:23:28,508 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-22 01:23:28,508 INFO ]: Found error trace [2018-06-22 01:23:28,508 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:23:28,508 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:23:28,509 INFO ]: Analyzing trace with hash -2048787497, now seen corresponding path program 1 times [2018-06-22 01:23:28,509 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:23:28,509 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:23:28,509 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:23:28,510 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:23:28,510 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:23:28,523 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:23:28,606 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 01:23:28,606 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 01:23:28,606 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 01:23:28,619 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:23:28,651 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:23:28,657 INFO ]: Computing forward predicates... [2018-06-22 01:23:28,681 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 01:23:28,714 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 01:23:28,714 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2018-06-22 01:23:28,714 INFO ]: Interpolant automaton has 4 states [2018-06-22 01:23:28,714 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 01:23:28,714 INFO ]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-06-22 01:23:28,715 INFO ]: Start difference. First operand 9 states and 13 transitions. Second operand 4 states. [2018-06-22 01:23:28,917 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:23:28,917 INFO ]: Finished difference Result 12 states and 22 transitions. [2018-06-22 01:23:28,919 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 01:23:28,919 INFO ]: Start accepts. Automaton has 4 states. Word has length 8 [2018-06-22 01:23:28,919 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:23:28,919 INFO ]: With dead ends: 12 [2018-06-22 01:23:28,919 INFO ]: Without dead ends: 12 [2018-06-22 01:23:28,919 INFO ]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-06-22 01:23:28,920 INFO ]: Start minimizeSevpa. Operand 12 states. [2018-06-22 01:23:28,921 INFO ]: Finished minimizeSevpa. Reduced states from 12 to 10. [2018-06-22 01:23:28,921 INFO ]: Start removeUnreachable. Operand 10 states. [2018-06-22 01:23:28,921 INFO ]: Finished removeUnreachable. Reduced from 10 states to 10 states and 16 transitions. [2018-06-22 01:23:28,921 INFO ]: Start accepts. Automaton has 10 states and 16 transitions. Word has length 8 [2018-06-22 01:23:28,921 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:23:28,921 INFO ]: Abstraction has 10 states and 16 transitions. [2018-06-22 01:23:28,921 INFO ]: Interpolant automaton has 4 states. [2018-06-22 01:23:28,921 INFO ]: Start isEmpty. Operand 10 states and 16 transitions. [2018-06-22 01:23:28,922 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 01:23:28,922 INFO ]: Found error trace [2018-06-22 01:23:28,922 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:23:28,922 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:23:28,922 INFO ]: Analyzing trace with hash 655263199, now seen corresponding path program 1 times [2018-06-22 01:23:28,922 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:23:28,922 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:23:28,924 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:23:28,924 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:23:28,924 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:23:28,954 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:23:29,070 INFO ]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 01:23:29,070 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 01:23:29,070 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 01:23:29,078 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:23:29,136 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:23:29,140 INFO ]: Computing forward predicates... [2018-06-22 01:23:29,145 INFO ]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 01:23:29,166 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 01:23:29,166 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2018-06-22 01:23:29,166 INFO ]: Interpolant automaton has 4 states [2018-06-22 01:23:29,166 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 01:23:29,166 INFO ]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-06-22 01:23:29,166 INFO ]: Start difference. First operand 10 states and 16 transitions. Second operand 4 states. [2018-06-22 01:23:29,277 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:23:29,277 INFO ]: Finished difference Result 15 states and 31 transitions. [2018-06-22 01:23:29,278 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 01:23:29,278 INFO ]: Start accepts. Automaton has 4 states. Word has length 9 [2018-06-22 01:23:29,278 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:23:29,278 INFO ]: With dead ends: 15 [2018-06-22 01:23:29,279 INFO ]: Without dead ends: 15 [2018-06-22 01:23:29,279 INFO ]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-06-22 01:23:29,279 INFO ]: Start minimizeSevpa. Operand 15 states. [2018-06-22 01:23:29,280 INFO ]: Finished minimizeSevpa. Reduced states from 15 to 10. [2018-06-22 01:23:29,280 INFO ]: Start removeUnreachable. Operand 10 states. [2018-06-22 01:23:29,281 INFO ]: Finished removeUnreachable. Reduced from 10 states to 10 states and 16 transitions. [2018-06-22 01:23:29,281 INFO ]: Start accepts. Automaton has 10 states and 16 transitions. Word has length 9 [2018-06-22 01:23:29,281 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:23:29,281 INFO ]: Abstraction has 10 states and 16 transitions. [2018-06-22 01:23:29,281 INFO ]: Interpolant automaton has 4 states. [2018-06-22 01:23:29,281 INFO ]: Start isEmpty. Operand 10 states and 16 transitions. [2018-06-22 01:23:29,281 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 01:23:29,281 INFO ]: Found error trace [2018-06-22 01:23:29,281 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:23:29,281 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:23:29,282 INFO ]: Analyzing trace with hash 912925558, now seen corresponding path program 2 times [2018-06-22 01:23:29,282 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:23:29,283 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:23:29,283 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:23:29,283 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:23:29,283 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:23:29,314 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:23:29,405 INFO ]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 01:23:29,405 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 01:23:29,405 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-22 01:23:29,405 INFO ]: Interpolant automaton has 3 states [2018-06-22 01:23:29,405 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-22 01:23:29,405 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-22 01:23:29,405 INFO ]: Start difference. First operand 10 states and 16 transitions. Second operand 3 states. [2018-06-22 01:23:29,423 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:23:29,423 INFO ]: Finished difference Result 6 states and 12 transitions. [2018-06-22 01:23:29,424 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-22 01:23:29,424 INFO ]: Start accepts. Automaton has 3 states. Word has length 9 [2018-06-22 01:23:29,424 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:23:29,424 INFO ]: With dead ends: 6 [2018-06-22 01:23:29,424 INFO ]: Without dead ends: 0 [2018-06-22 01:23:29,424 INFO ]: 0 DeclaredPredicates, 5 GetRequests, 4 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 01:23:29,424 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-22 01:23:29,424 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-22 01:23:29,424 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-22 01:23:29,424 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-22 01:23:29,424 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 9 [2018-06-22 01:23:29,424 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:23:29,425 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-22 01:23:29,425 INFO ]: Interpolant automaton has 3 states. [2018-06-22 01:23:29,425 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-22 01:23:29,425 INFO ]: Finished isEmpty. No accepting run. [2018-06-22 01:23:29,429 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 01:23:29 BoogieIcfgContainer [2018-06-22 01:23:29,429 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 01:23:29,430 INFO ]: Toolchain (without parser) took 1937.76 ms. Allocated memory is still 309.3 MB. Free memory was 265.7 MB in the beginning and 205.4 MB in the end (delta: 60.3 MB). Peak memory consumption was 60.3 MB. Max. memory is 3.6 GB. [2018-06-22 01:23:29,431 INFO ]: SmtParser took 0.08 ms. Allocated memory is still 309.3 MB. Free memory is still 273.8 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 01:23:29,432 INFO ]: ChcToBoogie took 57.37 ms. Allocated memory is still 309.3 MB. Free memory was 265.7 MB in the beginning and 261.7 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 3.6 GB. [2018-06-22 01:23:29,432 INFO ]: Boogie Preprocessor took 34.41 ms. Allocated memory is still 309.3 MB. Free memory is still 261.7 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 01:23:29,432 INFO ]: RCFGBuilder took 332.39 ms. Allocated memory is still 309.3 MB. Free memory was 261.7 MB in the beginning and 251.8 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 3.6 GB. [2018-06-22 01:23:29,433 INFO ]: TraceAbstraction took 1493.76 ms. Allocated memory is still 309.3 MB. Free memory was 251.8 MB in the beginning and 205.4 MB in the end (delta: 46.4 MB). Peak memory consumption was 46.4 MB. Max. memory is 3.6 GB. [2018-06-22 01:23:29,437 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 273.8 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 57.37 ms. Allocated memory is still 309.3 MB. Free memory was 265.7 MB in the beginning and 261.7 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 34.41 ms. Allocated memory is still 309.3 MB. Free memory is still 261.7 MB. There was no memory consumed. Max. memory is 3.6 GB. * RCFGBuilder took 332.39 ms. Allocated memory is still 309.3 MB. Free memory was 261.7 MB in the beginning and 251.8 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 1493.76 ms. Allocated memory is still 309.3 MB. Free memory was 251.8 MB in the beginning and 205.4 MB in the end (delta: 46.4 MB). Peak memory consumption was 46.4 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, 10 locations, 1 error locations. SAFE Result, 1.4s OverallTime, 5 OverallIterations, 2 TraceHistogramMax, 0.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 31 SDtfs, 0 SDslu, 32 SDs, 0 SdLazy, 33 SolverSat, 15 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 34 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=10occurred 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, 5 MinimizatonAttempts, 9 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 58 NumberOfCodeBlocks, 58 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 51 ConstructedInterpolants, 0 QuantifiedInterpolants, 761 SizeOfPredicates, 2 NumberOfNonLiveVariables, 196 ConjunctsInSsa, 10 ConjunctsInUnsatCore, 7 InterpolantComputations, 3 PerfectInterpolantSequences, 8/12 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/007-horn.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_01-23-29-448.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/007-horn.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_01-23-29-448.csv Received shutdown request...