java -Xss1g -Xmx4000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCHC.xml --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -s ../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_No_Goto.epf -i /storage/chc-comp/hopv/lia/mochi/enc-zip.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 11:31:07,130 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 11:31:07,132 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 11:31:07,148 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 11:31:07,149 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 11:31:07,150 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 11:31:07,151 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 11:31:07,153 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 11:31:07,155 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 11:31:07,155 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 11:31:07,157 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 11:31:07,158 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 11:31:07,158 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 11:31:07,159 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 11:31:07,163 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 11:31:07,164 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 11:31:07,166 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 11:31:07,176 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 11:31:07,177 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 11:31:07,178 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 11:31:07,179 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 11:31:07,186 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 11:31:07,186 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 11:31:07,187 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 11:31:07,187 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 11:31:07,188 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 11:31:07,189 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 11:31:07,192 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 11:31:07,193 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 11:31:07,193 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 11:31:07,193 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 11:31:07,194 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 11:31:07,194 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 11:31:07,198 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 11:31:07,199 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 11:31:07,199 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 11:31:07,213 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 11:31:07,213 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 11:31:07,213 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 11:31:07,213 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 11:31:07,214 INFO L131 SettingsManager]: Preferences of ChcToBoogie differ from their defaults: [2018-06-22 11:31:07,214 INFO L133 SettingsManager]: * Use one large procedure with gotos to replace tail recursive calls=false [2018-06-22 11:31:07,215 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 11:31:07,215 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 11:31:07,215 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 11:31:07,215 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 11:31:07,216 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 11:31:07,216 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 11:31:07,216 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 11:31:07,216 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 11:31:07,216 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 11:31:07,216 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 11:31:07,217 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 11:31:07,217 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 11:31:07,217 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 11:31:07,219 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 11:31:07,219 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 11:31:07,256 INFO ]: Repository-Root is: /tmp [2018-06-22 11:31:07,273 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 11:31:07,279 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 11:31:07,280 INFO ]: Initializing SmtParser... [2018-06-22 11:31:07,281 INFO ]: SmtParser initialized [2018-06-22 11:31:07,281 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/hopv/lia/mochi/enc-zip.smt2 [2018-06-22 11:31:07,283 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 11:31:07,375 INFO ]: Executing SMT file /storage/chc-comp/hopv/lia/mochi/enc-zip.smt2 unknown [2018-06-22 11:31:07,523 INFO ]: Succesfully executed SMT file /storage/chc-comp/hopv/lia/mochi/enc-zip.smt2 [2018-06-22 11:31:07,528 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 11:31:07,536 INFO ]: Walking toolchain with 4 elements. [2018-06-22 11:31:07,536 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 11:31:07,536 INFO ]: Initializing ChcToBoogie... [2018-06-22 11:31:07,537 INFO ]: ChcToBoogie initialized [2018-06-22 11:31:07,540 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 11:31:07" (1/1) ... [2018-06-22 11:31:07,591 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:31:07 Unit [2018-06-22 11:31:07,592 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 11:31:07,592 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 11:31:07,592 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 11:31:07,592 INFO ]: Boogie Preprocessor initialized [2018-06-22 11:31:07,615 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:31:07" (1/1) ... [2018-06-22 11:31:07,615 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:31:07" (1/1) ... [2018-06-22 11:31:07,624 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:31:07" (1/1) ... [2018-06-22 11:31:07,625 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:31:07" (1/1) ... [2018-06-22 11:31:07,629 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:31:07" (1/1) ... [2018-06-22 11:31:07,631 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:31:07" (1/1) ... [2018-06-22 11:31:07,631 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:31:07" (1/1) ... [2018-06-22 11:31:07,633 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 11:31:07,634 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 11:31:07,634 INFO ]: Initializing RCFGBuilder... [2018-06-22 11:31:07,634 INFO ]: RCFGBuilder initialized [2018-06-22 11:31:07,635 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:31:07" (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 11:31:07,660 INFO ]: Specification and implementation of procedure False given in one single declaration [2018-06-22 11:31:07,660 INFO ]: Found specification of procedure False [2018-06-22 11:31:07,661 INFO ]: Found implementation of procedure False [2018-06-22 11:31:07,661 INFO ]: Specification and implementation of procedure zipDLRunknownCLN3 given in one single declaration [2018-06-22 11:31:07,661 INFO ]: Found specification of procedure zipDLRunknownCLN3 [2018-06-22 11:31:07,661 INFO ]: Found implementation of procedure zipDLRunknownCLN3 [2018-06-22 11:31:07,661 INFO ]: Specification and implementation of procedure zipDLRunknownCLN2 given in one single declaration [2018-06-22 11:31:07,661 INFO ]: Found specification of procedure zipDLRunknownCLN2 [2018-06-22 11:31:07,661 INFO ]: Found implementation of procedure zipDLRunknownCLN2 [2018-06-22 11:31:07,661 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 11:31:07,661 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 11:31:07,661 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 11:31:08,010 INFO ]: Using library mode [2018-06-22 11:31:08,011 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 11:31:08 BoogieIcfgContainer [2018-06-22 11:31:08,011 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 11:31:08,013 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 11:31:08,013 INFO ]: Initializing TraceAbstraction... [2018-06-22 11:31:08,016 INFO ]: TraceAbstraction initialized [2018-06-22 11:31:08,016 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 11:31:07" (1/3) ... [2018-06-22 11:31:08,017 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b535ab2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 11:31:08, skipping insertion in model container [2018-06-22 11:31:08,017 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:31:07" (2/3) ... [2018-06-22 11:31:08,017 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b535ab2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 11:31:08, skipping insertion in model container [2018-06-22 11:31:08,017 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 11:31:08" (3/3) ... [2018-06-22 11:31:08,019 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 11:31:08,030 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 11:31:08,042 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 11:31:08,084 INFO ]: Using default assertion order modulation [2018-06-22 11:31:08,084 INFO ]: Interprodecural is true [2018-06-22 11:31:08,085 INFO ]: Hoare is false [2018-06-22 11:31:08,085 INFO ]: Compute interpolants for FPandBP [2018-06-22 11:31:08,085 INFO ]: Backedges is TWOTRACK [2018-06-22 11:31:08,085 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 11:31:08,085 INFO ]: Difference is false [2018-06-22 11:31:08,085 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 11:31:08,085 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 11:31:08,098 INFO ]: Start isEmpty. Operand 21 states. [2018-06-22 11:31:08,120 INFO ]: Finished isEmpty. Found accepting run of length 6 [2018-06-22 11:31:08,120 INFO ]: Found error trace [2018-06-22 11:31:08,121 INFO ]: trace histogram [1, 1, 1, 1, 1] [2018-06-22 11:31:08,121 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:31:08,127 INFO ]: Analyzing trace with hash 77678331, now seen corresponding path program 1 times [2018-06-22 11:31:08,129 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:31:08,129 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:31:08,163 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:31:08,163 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:31:08,163 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:31:08,178 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:31:08,202 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 11:31:08,204 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 11:31:08,204 INFO ]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-06-22 11:31:08,206 INFO ]: Interpolant automaton has 2 states [2018-06-22 11:31:08,221 INFO ]: Constructing interpolant automaton starting with 2 interpolants. [2018-06-22 11:31:08,222 INFO ]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-06-22 11:31:08,224 INFO ]: Start difference. First operand 21 states. Second operand 2 states. [2018-06-22 11:31:08,246 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:31:08,246 INFO ]: Finished difference Result 19 states and 27 transitions. [2018-06-22 11:31:08,246 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-06-22 11:31:08,247 INFO ]: Start accepts. Automaton has 2 states. Word has length 5 [2018-06-22 11:31:08,247 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:31:08,269 INFO ]: With dead ends: 19 [2018-06-22 11:31:08,269 INFO ]: Without dead ends: 19 [2018-06-22 11:31:08,270 INFO ]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-06-22 11:31:08,289 INFO ]: Start minimizeSevpa. Operand 19 states. [2018-06-22 11:31:08,307 INFO ]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-06-22 11:31:08,308 INFO ]: Start removeUnreachable. Operand 19 states. [2018-06-22 11:31:08,309 INFO ]: Finished removeUnreachable. Reduced from 19 states to 19 states and 27 transitions. [2018-06-22 11:31:08,310 INFO ]: Start accepts. Automaton has 19 states and 27 transitions. Word has length 5 [2018-06-22 11:31:08,310 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:31:08,311 INFO ]: Abstraction has 19 states and 27 transitions. [2018-06-22 11:31:08,311 INFO ]: Interpolant automaton has 2 states. [2018-06-22 11:31:08,311 INFO ]: Start isEmpty. Operand 19 states and 27 transitions. [2018-06-22 11:31:08,313 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 11:31:08,313 INFO ]: Found error trace [2018-06-22 11:31:08,313 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:31:08,313 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:31:08,313 INFO ]: Analyzing trace with hash -71127032, now seen corresponding path program 1 times [2018-06-22 11:31:08,313 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:31:08,313 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:31:08,314 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:31:08,314 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:31:08,314 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:31:08,336 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:31:08,513 WARN ]: Spent 117.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 15 [2018-06-22 11:31:08,525 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 11:31:08,525 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 11:31:08,525 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 11:31:08,527 INFO ]: Interpolant automaton has 4 states [2018-06-22 11:31:08,527 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 11:31:08,527 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 11:31:08,527 INFO ]: Start difference. First operand 19 states and 27 transitions. Second operand 4 states. [2018-06-22 11:31:08,626 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:31:08,626 INFO ]: Finished difference Result 23 states and 33 transitions. [2018-06-22 11:31:08,626 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 11:31:08,626 INFO ]: Start accepts. Automaton has 4 states. Word has length 9 [2018-06-22 11:31:08,627 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:31:08,627 INFO ]: With dead ends: 23 [2018-06-22 11:31:08,628 INFO ]: Without dead ends: 23 [2018-06-22 11:31:08,628 INFO ]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 11:31:08,628 INFO ]: Start minimizeSevpa. Operand 23 states. [2018-06-22 11:31:08,637 INFO ]: Finished minimizeSevpa. Reduced states from 23 to 21. [2018-06-22 11:31:08,637 INFO ]: Start removeUnreachable. Operand 21 states. [2018-06-22 11:31:08,638 INFO ]: Finished removeUnreachable. Reduced from 21 states to 21 states and 31 transitions. [2018-06-22 11:31:08,638 INFO ]: Start accepts. Automaton has 21 states and 31 transitions. Word has length 9 [2018-06-22 11:31:08,638 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:31:08,638 INFO ]: Abstraction has 21 states and 31 transitions. [2018-06-22 11:31:08,638 INFO ]: Interpolant automaton has 4 states. [2018-06-22 11:31:08,638 INFO ]: Start isEmpty. Operand 21 states and 31 transitions. [2018-06-22 11:31:08,639 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-22 11:31:08,639 INFO ]: Found error trace [2018-06-22 11:31:08,639 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:31:08,639 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:31:08,639 INFO ]: Analyzing trace with hash -979019647, now seen corresponding path program 1 times [2018-06-22 11:31:08,639 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:31:08,639 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:31:08,640 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:31:08,640 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:31:08,640 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:31:08,647 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:31:08,698 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 11:31:08,698 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 11:31:08,698 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 11:31:08,699 INFO ]: Interpolant automaton has 4 states [2018-06-22 11:31:08,699 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 11:31:08,699 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 11:31:08,699 INFO ]: Start difference. First operand 21 states and 31 transitions. Second operand 4 states. [2018-06-22 11:31:08,755 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:31:08,755 INFO ]: Finished difference Result 25 states and 35 transitions. [2018-06-22 11:31:08,755 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 11:31:08,755 INFO ]: Start accepts. Automaton has 4 states. Word has length 13 [2018-06-22 11:31:08,755 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:31:08,756 INFO ]: With dead ends: 25 [2018-06-22 11:31:08,756 INFO ]: Without dead ends: 25 [2018-06-22 11:31:08,757 INFO ]: 0 DeclaredPredicates, 4 GetRequests, 2 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 11:31:08,757 INFO ]: Start minimizeSevpa. Operand 25 states. [2018-06-22 11:31:08,763 INFO ]: Finished minimizeSevpa. Reduced states from 25 to 23. [2018-06-22 11:31:08,763 INFO ]: Start removeUnreachable. Operand 23 states. [2018-06-22 11:31:08,764 INFO ]: Finished removeUnreachable. Reduced from 23 states to 23 states and 33 transitions. [2018-06-22 11:31:08,764 INFO ]: Start accepts. Automaton has 23 states and 33 transitions. Word has length 13 [2018-06-22 11:31:08,765 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:31:08,765 INFO ]: Abstraction has 23 states and 33 transitions. [2018-06-22 11:31:08,765 INFO ]: Interpolant automaton has 4 states. [2018-06-22 11:31:08,765 INFO ]: Start isEmpty. Operand 23 states and 33 transitions. [2018-06-22 11:31:08,766 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-22 11:31:08,766 INFO ]: Found error trace [2018-06-22 11:31:08,766 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:31:08,766 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:31:08,766 INFO ]: Analyzing trace with hash 1369277290, now seen corresponding path program 1 times [2018-06-22 11:31:08,766 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:31:08,766 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:31:08,767 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:31:08,767 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:31:08,767 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:31:08,778 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:31:09,234 WARN ]: Spent 420.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 15 [2018-06-22 11:31:09,257 INFO ]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 11:31:09,257 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 11:31:09,257 INFO ]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-06-22 11:31:09,257 INFO ]: Interpolant automaton has 5 states [2018-06-22 11:31:09,257 INFO ]: Constructing interpolant automaton starting with 5 interpolants. [2018-06-22 11:31:09,257 INFO ]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-06-22 11:31:09,258 INFO ]: Start difference. First operand 23 states and 33 transitions. Second operand 5 states. [2018-06-22 11:31:09,540 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:31:09,540 INFO ]: Finished difference Result 23 states and 31 transitions. [2018-06-22 11:31:09,541 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-22 11:31:09,541 INFO ]: Start accepts. Automaton has 5 states. Word has length 13 [2018-06-22 11:31:09,541 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:31:09,542 INFO ]: With dead ends: 23 [2018-06-22 11:31:09,542 INFO ]: Without dead ends: 21 [2018-06-22 11:31:09,542 INFO ]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-06-22 11:31:09,542 INFO ]: Start minimizeSevpa. Operand 21 states. [2018-06-22 11:31:09,546 INFO ]: Finished minimizeSevpa. Reduced states from 21 to 19. [2018-06-22 11:31:09,546 INFO ]: Start removeUnreachable. Operand 19 states. [2018-06-22 11:31:09,546 INFO ]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2018-06-22 11:31:09,546 INFO ]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 13 [2018-06-22 11:31:09,547 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:31:09,547 INFO ]: Abstraction has 19 states and 23 transitions. [2018-06-22 11:31:09,547 INFO ]: Interpolant automaton has 5 states. [2018-06-22 11:31:09,547 INFO ]: Start isEmpty. Operand 19 states and 23 transitions. [2018-06-22 11:31:09,547 INFO ]: Finished isEmpty. Found accepting run of length 22 [2018-06-22 11:31:09,547 INFO ]: Found error trace [2018-06-22 11:31:09,547 INFO ]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:31:09,547 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:31:09,548 INFO ]: Analyzing trace with hash -2058590488, now seen corresponding path program 1 times [2018-06-22 11:31:09,548 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:31:09,548 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:31:09,548 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:31:09,548 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:31:09,548 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:31:09,562 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:31:09,844 WARN ]: Spent 187.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 25 [2018-06-22 11:31:09,919 INFO ]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-06-22 11:31:09,919 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:31:09,919 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 11:31:09,939 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:31:09,980 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:31:09,986 INFO ]: Computing forward predicates... [2018-06-22 11:31:10,297 INFO ]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-06-22 11:31:10,318 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:31:10,318 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2018-06-22 11:31:10,318 INFO ]: Interpolant automaton has 9 states [2018-06-22 11:31:10,318 INFO ]: Constructing interpolant automaton starting with 9 interpolants. [2018-06-22 11:31:10,318 INFO ]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2018-06-22 11:31:10,319 INFO ]: Start difference. First operand 19 states and 23 transitions. Second operand 9 states. [2018-06-22 11:31:10,550 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:31:10,550 INFO ]: Finished difference Result 18 states and 23 transitions. [2018-06-22 11:31:10,550 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-22 11:31:10,550 INFO ]: Start accepts. Automaton has 9 states. Word has length 21 [2018-06-22 11:31:10,551 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:31:10,551 INFO ]: With dead ends: 18 [2018-06-22 11:31:10,551 INFO ]: Without dead ends: 0 [2018-06-22 11:31:10,551 INFO ]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-06-22 11:31:10,551 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-22 11:31:10,551 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-22 11:31:10,551 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-22 11:31:10,551 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-22 11:31:10,551 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2018-06-22 11:31:10,551 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:31:10,551 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-22 11:31:10,551 INFO ]: Interpolant automaton has 9 states. [2018-06-22 11:31:10,551 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-22 11:31:10,552 INFO ]: Finished isEmpty. No accepting run. [2018-06-22 11:31:10,557 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 11:31:10 BoogieIcfgContainer [2018-06-22 11:31:10,557 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 11:31:10,558 INFO ]: Toolchain (without parser) took 3029.32 ms. Allocated memory was 305.1 MB in the beginning and 324.0 MB in the end (delta: 18.9 MB). Free memory was 261.5 MB in the beginning and 268.7 MB in the end (delta: -7.2 MB). Peak memory consumption was 11.7 MB. Max. memory is 3.6 GB. [2018-06-22 11:31:10,559 INFO ]: SmtParser took 0.07 ms. Allocated memory is still 305.1 MB. Free memory is still 270.6 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 11:31:10,559 INFO ]: ChcToBoogie took 55.52 ms. Allocated memory is still 305.1 MB. Free memory was 260.5 MB in the beginning and 259.5 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 3.6 GB. [2018-06-22 11:31:10,560 INFO ]: Boogie Preprocessor took 41.18 ms. Allocated memory is still 305.1 MB. Free memory was 259.5 MB in the beginning and 257.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 11:31:10,560 INFO ]: RCFGBuilder took 377.28 ms. Allocated memory is still 305.1 MB. Free memory was 257.5 MB in the beginning and 249.5 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 3.6 GB. [2018-06-22 11:31:10,561 INFO ]: TraceAbstraction took 2544.33 ms. Allocated memory was 305.1 MB in the beginning and 324.0 MB in the end (delta: 18.9 MB). Free memory was 248.5 MB in the beginning and 268.7 MB in the end (delta: -20.1 MB). There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 11:31:10,564 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.07 ms. Allocated memory is still 305.1 MB. Free memory is still 270.6 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 55.52 ms. Allocated memory is still 305.1 MB. Free memory was 260.5 MB in the beginning and 259.5 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 3.6 GB. * Boogie Preprocessor took 41.18 ms. Allocated memory is still 305.1 MB. Free memory was 259.5 MB in the beginning and 257.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 377.28 ms. Allocated memory is still 305.1 MB. Free memory was 257.5 MB in the beginning and 249.5 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 2544.33 ms. Allocated memory was 305.1 MB in the beginning and 324.0 MB in the end (delta: 18.9 MB). Free memory was 248.5 MB in the beginning and 268.7 MB in the end (delta: -20.1 MB). There was no memory consumed. Max. memory is 3.6 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [UNKNOWN] : assertion always holds For all program executions holds that assertion always holds at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 21 locations, 1 error locations. SAFE Result, 2.4s OverallTime, 5 OverallIterations, 2 TraceHistogramMax, 0.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 122 SDtfs, 5 SDslu, 198 SDs, 0 SdLazy, 87 SolverSat, 14 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 45 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 6 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 82 NumberOfCodeBlocks, 82 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 76 ConstructedInterpolants, 0 QuantifiedInterpolants, 5148 SizeOfPredicates, 6 NumberOfNonLiveVariables, 69 ConjunctsInSsa, 19 ConjunctsInUnsatCore, 6 InterpolantComputations, 4 PerfectInterpolantSequences, 11/15 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/enc-zip.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_11-31-10-575.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/enc-zip.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_11-31-10-575.csv Received shutdown request...