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/mult.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 11:35:32,298 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 11:35:32,300 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 11:35:32,313 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 11:35:32,313 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 11:35:32,315 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 11:35:32,316 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 11:35:32,317 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 11:35:32,319 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 11:35:32,319 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 11:35:32,321 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 11:35:32,322 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 11:35:32,322 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 11:35:32,323 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 11:35:32,324 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 11:35:32,327 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 11:35:32,329 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 11:35:32,331 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 11:35:32,344 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 11:35:32,346 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 11:35:32,347 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 11:35:32,349 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 11:35:32,349 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 11:35:32,349 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 11:35:32,350 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 11:35:32,351 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 11:35:32,351 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 11:35:32,352 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 11:35:32,359 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 11:35:32,359 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 11:35:32,360 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 11:35:32,361 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 11:35:32,361 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 11:35:32,362 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 11:35:32,362 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 11:35:32,362 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 11:35:32,383 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 11:35:32,383 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 11:35:32,383 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 11:35:32,384 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 11:35:32,385 INFO L131 SettingsManager]: Preferences of ChcToBoogie differ from their defaults: [2018-06-22 11:35:32,385 INFO L133 SettingsManager]: * Use one large procedure with gotos to replace tail recursive calls=false [2018-06-22 11:35:32,385 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 11:35:32,385 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 11:35:32,385 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 11:35:32,386 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 11:35:32,386 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 11:35:32,386 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 11:35:32,386 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 11:35:32,386 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 11:35:32,387 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 11:35:32,387 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 11:35:32,387 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 11:35:32,387 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 11:35:32,387 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 11:35:32,389 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 11:35:32,389 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 11:35:32,432 INFO ]: Repository-Root is: /tmp [2018-06-22 11:35:32,450 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 11:35:32,454 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 11:35:32,456 INFO ]: Initializing SmtParser... [2018-06-22 11:35:32,456 INFO ]: SmtParser initialized [2018-06-22 11:35:32,457 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/hopv/lia/mochi/mult.smt2 [2018-06-22 11:35:32,458 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 11:35:32,548 INFO ]: Executing SMT file /storage/chc-comp/hopv/lia/mochi/mult.smt2 unknown [2018-06-22 11:35:32,673 INFO ]: Succesfully executed SMT file /storage/chc-comp/hopv/lia/mochi/mult.smt2 [2018-06-22 11:35:32,677 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 11:35:32,683 INFO ]: Walking toolchain with 4 elements. [2018-06-22 11:35:32,683 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 11:35:32,684 INFO ]: Initializing ChcToBoogie... [2018-06-22 11:35:32,684 INFO ]: ChcToBoogie initialized [2018-06-22 11:35:32,687 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 11:35:32" (1/1) ... [2018-06-22 11:35:32,729 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:35:32 Unit [2018-06-22 11:35:32,729 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 11:35:32,729 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 11:35:32,729 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 11:35:32,729 INFO ]: Boogie Preprocessor initialized [2018-06-22 11:35:32,752 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:35:32" (1/1) ... [2018-06-22 11:35:32,753 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:35:32" (1/1) ... [2018-06-22 11:35:32,759 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:35:32" (1/1) ... [2018-06-22 11:35:32,760 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:35:32" (1/1) ... [2018-06-22 11:35:32,762 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:35:32" (1/1) ... [2018-06-22 11:35:32,764 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:35:32" (1/1) ... [2018-06-22 11:35:32,764 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:35:32" (1/1) ... [2018-06-22 11:35:32,766 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 11:35:32,767 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 11:35:32,767 INFO ]: Initializing RCFGBuilder... [2018-06-22 11:35:32,767 INFO ]: RCFGBuilder initialized [2018-06-22 11:35:32,768 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:35:32" (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 11:35:32,787 INFO ]: Specification and implementation of procedure False given in one single declaration [2018-06-22 11:35:32,787 INFO ]: Found specification of procedure False [2018-06-22 11:35:32,787 INFO ]: Found implementation of procedure False [2018-06-22 11:35:32,787 INFO ]: Specification and implementation of procedure multDLRunknownCLN3 given in one single declaration [2018-06-22 11:35:32,787 INFO ]: Found specification of procedure multDLRunknownCLN3 [2018-06-22 11:35:32,787 INFO ]: Found implementation of procedure multDLRunknownCLN3 [2018-06-22 11:35:32,787 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 11:35:32,787 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 11:35:32,788 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 11:35:32,963 INFO ]: Using library mode [2018-06-22 11:35:32,963 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 11:35:32 BoogieIcfgContainer [2018-06-22 11:35:32,963 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 11:35:32,967 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 11:35:32,967 INFO ]: Initializing TraceAbstraction... [2018-06-22 11:35:32,984 INFO ]: TraceAbstraction initialized [2018-06-22 11:35:32,984 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 11:35:32" (1/3) ... [2018-06-22 11:35:32,985 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58f7c221 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 11:35:32, skipping insertion in model container [2018-06-22 11:35:32,985 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:35:32" (2/3) ... [2018-06-22 11:35:32,985 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58f7c221 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 11:35:32, skipping insertion in model container [2018-06-22 11:35:32,985 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 11:35:32" (3/3) ... [2018-06-22 11:35:32,987 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 11:35:33,004 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 11:35:33,019 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 11:35:33,108 INFO ]: Using default assertion order modulation [2018-06-22 11:35:33,109 INFO ]: Interprodecural is true [2018-06-22 11:35:33,109 INFO ]: Hoare is false [2018-06-22 11:35:33,109 INFO ]: Compute interpolants for FPandBP [2018-06-22 11:35:33,109 INFO ]: Backedges is TWOTRACK [2018-06-22 11:35:33,109 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 11:35:33,109 INFO ]: Difference is false [2018-06-22 11:35:33,109 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 11:35:33,109 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 11:35:33,130 INFO ]: Start isEmpty. Operand 13 states. [2018-06-22 11:35:33,138 INFO ]: Finished isEmpty. Found accepting run of length 6 [2018-06-22 11:35:33,138 INFO ]: Found error trace [2018-06-22 11:35:33,139 INFO ]: trace histogram [1, 1, 1, 1, 1] [2018-06-22 11:35:33,139 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:35:33,148 INFO ]: Analyzing trace with hash 60595988, now seen corresponding path program 1 times [2018-06-22 11:35:33,149 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:35:33,150 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:35:33,181 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:35:33,181 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:35:33,181 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:35:33,195 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:35:33,222 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 11:35:33,225 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 11:35:33,225 INFO ]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-06-22 11:35:33,227 INFO ]: Interpolant automaton has 2 states [2018-06-22 11:35:33,237 INFO ]: Constructing interpolant automaton starting with 2 interpolants. [2018-06-22 11:35:33,238 INFO ]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-06-22 11:35:33,240 INFO ]: Start difference. First operand 13 states. Second operand 2 states. [2018-06-22 11:35:33,259 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:35:33,259 INFO ]: Finished difference Result 11 states and 12 transitions. [2018-06-22 11:35:33,259 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-06-22 11:35:33,260 INFO ]: Start accepts. Automaton has 2 states. Word has length 5 [2018-06-22 11:35:33,260 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:35:33,271 INFO ]: With dead ends: 11 [2018-06-22 11:35:33,271 INFO ]: Without dead ends: 11 [2018-06-22 11:35:33,273 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 11:35:33,287 INFO ]: Start minimizeSevpa. Operand 11 states. [2018-06-22 11:35:33,308 INFO ]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-06-22 11:35:33,309 INFO ]: Start removeUnreachable. Operand 11 states. [2018-06-22 11:35:33,310 INFO ]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2018-06-22 11:35:33,310 INFO ]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 5 [2018-06-22 11:35:33,310 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:35:33,310 INFO ]: Abstraction has 11 states and 12 transitions. [2018-06-22 11:35:33,310 INFO ]: Interpolant automaton has 2 states. [2018-06-22 11:35:33,311 INFO ]: Start isEmpty. Operand 11 states and 12 transitions. [2018-06-22 11:35:33,311 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 11:35:33,312 INFO ]: Found error trace [2018-06-22 11:35:33,312 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:35:33,312 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:35:33,312 INFO ]: Analyzing trace with hash 2069731019, now seen corresponding path program 1 times [2018-06-22 11:35:33,312 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:35:33,312 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:35:33,313 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:35:33,313 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:35:33,313 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:35:33,332 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:35:33,422 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 11:35:33,422 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 11:35:33,422 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 11:35:33,424 INFO ]: Interpolant automaton has 4 states [2018-06-22 11:35:33,424 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 11:35:33,424 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 11:35:33,424 INFO ]: Start difference. First operand 11 states and 12 transitions. Second operand 4 states. [2018-06-22 11:35:33,457 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:35:33,457 INFO ]: Finished difference Result 13 states and 14 transitions. [2018-06-22 11:35:33,457 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 11:35:33,457 INFO ]: Start accepts. Automaton has 4 states. Word has length 9 [2018-06-22 11:35:33,458 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:35:33,460 INFO ]: With dead ends: 13 [2018-06-22 11:35:33,460 INFO ]: Without dead ends: 13 [2018-06-22 11:35:33,460 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 11:35:33,461 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-22 11:35:33,465 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-22 11:35:33,465 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-22 11:35:33,465 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2018-06-22 11:35:33,465 INFO ]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 9 [2018-06-22 11:35:33,466 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:35:33,466 INFO ]: Abstraction has 13 states and 14 transitions. [2018-06-22 11:35:33,466 INFO ]: Interpolant automaton has 4 states. [2018-06-22 11:35:33,466 INFO ]: Start isEmpty. Operand 13 states and 14 transitions. [2018-06-22 11:35:33,466 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-22 11:35:33,466 INFO ]: Found error trace [2018-06-22 11:35:33,466 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:35:33,466 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:35:33,466 INFO ]: Analyzing trace with hash 2054290735, now seen corresponding path program 1 times [2018-06-22 11:35:33,466 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:35:33,466 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:35:33,467 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:35:33,467 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:35:33,467 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:35:33,485 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:35:33,589 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 11:35:33,590 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:35:33,590 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 11:35:33,596 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:35:33,629 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:35:33,641 INFO ]: Computing forward predicates... [2018-06-22 11:35:33,696 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 11:35:33,717 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:35:33,717 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2018-06-22 11:35:33,717 INFO ]: Interpolant automaton has 6 states [2018-06-22 11:35:33,717 INFO ]: Constructing interpolant automaton starting with 6 interpolants. [2018-06-22 11:35:33,717 INFO ]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-06-22 11:35:33,717 INFO ]: Start difference. First operand 13 states and 14 transitions. Second operand 6 states. [2018-06-22 11:35:33,901 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:35:33,901 INFO ]: Finished difference Result 15 states and 16 transitions. [2018-06-22 11:35:33,902 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-22 11:35:33,902 INFO ]: Start accepts. Automaton has 6 states. Word has length 13 [2018-06-22 11:35:33,902 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:35:33,902 INFO ]: With dead ends: 15 [2018-06-22 11:35:33,902 INFO ]: Without dead ends: 15 [2018-06-22 11:35:33,903 INFO ]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-06-22 11:35:33,903 INFO ]: Start minimizeSevpa. Operand 15 states. [2018-06-22 11:35:33,907 INFO ]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-06-22 11:35:33,907 INFO ]: Start removeUnreachable. Operand 15 states. [2018-06-22 11:35:33,907 INFO ]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2018-06-22 11:35:33,907 INFO ]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 13 [2018-06-22 11:35:33,907 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:35:33,907 INFO ]: Abstraction has 15 states and 16 transitions. [2018-06-22 11:35:33,907 INFO ]: Interpolant automaton has 6 states. [2018-06-22 11:35:33,908 INFO ]: Start isEmpty. Operand 15 states and 16 transitions. [2018-06-22 11:35:33,908 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-22 11:35:33,908 INFO ]: Found error trace [2018-06-22 11:35:33,908 INFO ]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:35:33,908 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:35:33,908 INFO ]: Analyzing trace with hash -328524909, now seen corresponding path program 2 times [2018-06-22 11:35:33,909 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:35:33,909 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:35:33,909 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:35:33,909 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:35:33,909 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:35:33,936 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:35:34,257 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 11:35:34,257 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:35:34,257 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 11:35:34,265 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 11:35:34,291 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 11:35:34,291 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:35:34,293 INFO ]: Computing forward predicates... [2018-06-22 11:35:34,527 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 11:35:34,546 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:35:34,546 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2018-06-22 11:35:34,546 INFO ]: Interpolant automaton has 12 states [2018-06-22 11:35:34,547 INFO ]: Constructing interpolant automaton starting with 12 interpolants. [2018-06-22 11:35:34,547 INFO ]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2018-06-22 11:35:34,547 INFO ]: Start difference. First operand 15 states and 16 transitions. Second operand 12 states. [2018-06-22 11:35:34,886 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:35:34,887 INFO ]: Finished difference Result 17 states and 18 transitions. [2018-06-22 11:35:34,887 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-22 11:35:34,887 INFO ]: Start accepts. Automaton has 12 states. Word has length 17 [2018-06-22 11:35:34,887 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:35:34,888 INFO ]: With dead ends: 17 [2018-06-22 11:35:34,888 INFO ]: Without dead ends: 17 [2018-06-22 11:35:34,888 INFO ]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2018-06-22 11:35:34,888 INFO ]: Start minimizeSevpa. Operand 17 states. [2018-06-22 11:35:34,898 INFO ]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-06-22 11:35:34,898 INFO ]: Start removeUnreachable. Operand 17 states. [2018-06-22 11:35:34,899 INFO ]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2018-06-22 11:35:34,899 INFO ]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 17 [2018-06-22 11:35:34,899 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:35:34,899 INFO ]: Abstraction has 17 states and 18 transitions. [2018-06-22 11:35:34,899 INFO ]: Interpolant automaton has 12 states. [2018-06-22 11:35:34,899 INFO ]: Start isEmpty. Operand 17 states and 18 transitions. [2018-06-22 11:35:34,899 INFO ]: Finished isEmpty. Found accepting run of length 22 [2018-06-22 11:35:34,899 INFO ]: Found error trace [2018-06-22 11:35:34,900 INFO ]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:35:34,900 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:35:34,900 INFO ]: Analyzing trace with hash 2024960503, now seen corresponding path program 3 times [2018-06-22 11:35:34,900 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:35:34,900 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:35:34,901 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:35:34,901 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 11:35:34,901 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:35:34,927 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:35:35,508 INFO ]: Checked inductivity of 21 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-06-22 11:35:35,508 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:35:35,508 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 11:35:35,525 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-22 11:35:35,578 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-06-22 11:35:35,578 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:35:35,581 INFO ]: Computing forward predicates... [2018-06-22 11:35:35,762 INFO ]: Checked inductivity of 21 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-06-22 11:35:35,792 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:35:35,792 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 14 [2018-06-22 11:35:35,792 INFO ]: Interpolant automaton has 14 states [2018-06-22 11:35:35,792 INFO ]: Constructing interpolant automaton starting with 14 interpolants. [2018-06-22 11:35:35,793 INFO ]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2018-06-22 11:35:35,793 INFO ]: Start difference. First operand 17 states and 18 transitions. Second operand 14 states. [2018-06-22 11:35:36,023 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:35:36,023 INFO ]: Finished difference Result 13 states and 14 transitions. [2018-06-22 11:35:36,023 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-06-22 11:35:36,023 INFO ]: Start accepts. Automaton has 14 states. Word has length 21 [2018-06-22 11:35:36,023 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:35:36,023 INFO ]: With dead ends: 13 [2018-06-22 11:35:36,023 INFO ]: Without dead ends: 0 [2018-06-22 11:35:36,024 INFO ]: 0 DeclaredPredicates, 34 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2018-06-22 11:35:36,024 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-22 11:35:36,024 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-22 11:35:36,024 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-22 11:35:36,024 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-22 11:35:36,024 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2018-06-22 11:35:36,024 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:35:36,024 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-22 11:35:36,024 INFO ]: Interpolant automaton has 14 states. [2018-06-22 11:35:36,024 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-22 11:35:36,024 INFO ]: Finished isEmpty. No accepting run. [2018-06-22 11:35:36,028 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 11:35:36 BoogieIcfgContainer [2018-06-22 11:35:36,028 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 11:35:36,029 INFO ]: Toolchain (without parser) took 3351.12 ms. Allocated memory was 308.3 MB in the beginning and 325.6 MB in the end (delta: 17.3 MB). Free memory was 264.7 MB in the beginning and 235.3 MB in the end (delta: 29.4 MB). Peak memory consumption was 46.7 MB. Max. memory is 3.6 GB. [2018-06-22 11:35:36,031 INFO ]: SmtParser took 0.07 ms. Allocated memory is still 308.3 MB. Free memory is still 272.8 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 11:35:36,031 INFO ]: ChcToBoogie took 45.58 ms. Allocated memory is still 308.3 MB. Free memory was 264.7 MB in the beginning and 262.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 11:35:36,031 INFO ]: Boogie Preprocessor took 36.74 ms. Allocated memory is still 308.3 MB. Free memory was 262.7 MB in the beginning and 260.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 11:35:36,032 INFO ]: RCFGBuilder took 196.70 ms. Allocated memory is still 308.3 MB. Free memory was 260.7 MB in the beginning and 254.7 MB in the end (delta: 6.0 MB). Peak memory consumption was 6.0 MB. Max. memory is 3.6 GB. [2018-06-22 11:35:36,032 INFO ]: TraceAbstraction took 3061.47 ms. Allocated memory was 308.3 MB in the beginning and 325.6 MB in the end (delta: 17.3 MB). Free memory was 254.7 MB in the beginning and 235.3 MB in the end (delta: 19.4 MB). Peak memory consumption was 36.7 MB. Max. memory is 3.6 GB. [2018-06-22 11:35:36,035 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 308.3 MB. Free memory is still 272.8 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 45.58 ms. Allocated memory is still 308.3 MB. Free memory was 264.7 MB in the beginning and 262.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 36.74 ms. Allocated memory is still 308.3 MB. Free memory was 262.7 MB in the beginning and 260.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 196.70 ms. Allocated memory is still 308.3 MB. Free memory was 260.7 MB in the beginning and 254.7 MB in the end (delta: 6.0 MB). Peak memory consumption was 6.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 3061.47 ms. Allocated memory was 308.3 MB in the beginning and 325.6 MB in the end (delta: 17.3 MB). Free memory was 254.7 MB in the beginning and 235.3 MB in the end (delta: 19.4 MB). Peak memory consumption was 36.7 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 3 procedures, 13 locations, 1 error locations. SAFE Result, 2.9s OverallTime, 5 OverallIterations, 4 TraceHistogramMax, 0.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 56 SDtfs, 20 SDslu, 119 SDs, 0 SdLazy, 105 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 86 GetRequests, 47 SyntacticMatches, 3 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 1.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred in iteration=4, 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, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 116 NumberOfCodeBlocks, 116 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 108 ConstructedInterpolants, 2 QuantifiedInterpolants, 6192 SizeOfPredicates, 23 NumberOfNonLiveVariables, 195 ConjunctsInSsa, 47 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 27/68 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/mult.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_11-35-36-047.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/mult.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_11-35-36-047.csv Received shutdown request...