java -Xss1g -Xmx4000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCHC.xml --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -s ../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_No_Goto.epf -i /storage/chc-comp/eldarica-misc/LIA/reve/003b-horn.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 11:08:27,700 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 11:08:27,702 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 11:08:27,717 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 11:08:27,718 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 11:08:27,719 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 11:08:27,723 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 11:08:27,726 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 11:08:27,729 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 11:08:27,730 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 11:08:27,731 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 11:08:27,731 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 11:08:27,744 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 11:08:27,746 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 11:08:27,746 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 11:08:27,747 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 11:08:27,749 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 11:08:27,751 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 11:08:27,755 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 11:08:27,757 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 11:08:27,758 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 11:08:27,763 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 11:08:27,763 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 11:08:27,763 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 11:08:27,764 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 11:08:27,772 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 11:08:27,773 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 11:08:27,773 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 11:08:27,776 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 11:08:27,776 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 11:08:27,777 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 11:08:27,778 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 11:08:27,778 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 11:08:27,784 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 11:08:27,785 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 11:08:27,785 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 11:08:27,809 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 11:08:27,809 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 11:08:27,809 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 11:08:27,810 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 11:08:27,811 INFO L131 SettingsManager]: Preferences of ChcToBoogie differ from their defaults: [2018-06-22 11:08:27,811 INFO L133 SettingsManager]: * Use one large procedure with gotos to replace tail recursive calls=false [2018-06-22 11:08:27,812 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 11:08:27,812 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 11:08:27,812 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 11:08:27,812 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 11:08:27,812 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 11:08:27,813 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 11:08:27,813 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 11:08:27,813 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 11:08:27,813 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 11:08:27,813 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 11:08:27,814 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 11:08:27,815 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 11:08:27,815 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 11:08:27,816 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 11:08:27,817 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 11:08:27,869 INFO ]: Repository-Root is: /tmp [2018-06-22 11:08:27,885 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 11:08:27,892 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 11:08:27,893 INFO ]: Initializing SmtParser... [2018-06-22 11:08:27,894 INFO ]: SmtParser initialized [2018-06-22 11:08:27,894 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/eldarica-misc/LIA/reve/003b-horn.smt2 [2018-06-22 11:08:27,896 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 11:08:27,991 INFO ]: Executing SMT file /storage/chc-comp/eldarica-misc/LIA/reve/003b-horn.smt2 unknown [2018-06-22 11:08:28,209 INFO ]: Succesfully executed SMT file /storage/chc-comp/eldarica-misc/LIA/reve/003b-horn.smt2 [2018-06-22 11:08:28,215 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 11:08:28,224 INFO ]: Walking toolchain with 4 elements. [2018-06-22 11:08:28,224 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 11:08:28,224 INFO ]: Initializing ChcToBoogie... [2018-06-22 11:08:28,224 INFO ]: ChcToBoogie initialized [2018-06-22 11:08:28,230 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 11:08:28" (1/1) ... [2018-06-22 11:08:28,290 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:08:28 Unit [2018-06-22 11:08:28,290 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 11:08:28,291 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 11:08:28,291 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 11:08:28,291 INFO ]: Boogie Preprocessor initialized [2018-06-22 11:08:28,316 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:08:28" (1/1) ... [2018-06-22 11:08:28,316 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:08:28" (1/1) ... [2018-06-22 11:08:28,325 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:08:28" (1/1) ... [2018-06-22 11:08:28,326 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:08:28" (1/1) ... [2018-06-22 11:08:28,329 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:08:28" (1/1) ... [2018-06-22 11:08:28,332 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:08:28" (1/1) ... [2018-06-22 11:08:28,333 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:08:28" (1/1) ... [2018-06-22 11:08:28,335 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 11:08:28,341 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 11:08:28,341 INFO ]: Initializing RCFGBuilder... [2018-06-22 11:08:28,341 INFO ]: RCFGBuilder initialized [2018-06-22 11:08:28,342 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:08:28" (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 11:08:28,360 INFO ]: Specification and implementation of procedure False given in one single declaration [2018-06-22 11:08:28,360 INFO ]: Found specification of procedure False [2018-06-22 11:08:28,360 INFO ]: Found implementation of procedure False [2018-06-22 11:08:28,360 INFO ]: Specification and implementation of procedure INV1 given in one single declaration [2018-06-22 11:08:28,360 INFO ]: Found specification of procedure INV1 [2018-06-22 11:08:28,360 INFO ]: Found implementation of procedure INV1 [2018-06-22 11:08:28,360 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 11:08:28,360 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 11:08:28,360 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 11:08:28,692 INFO ]: Using library mode [2018-06-22 11:08:28,693 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 11:08:28 BoogieIcfgContainer [2018-06-22 11:08:28,693 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 11:08:28,694 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 11:08:28,694 INFO ]: Initializing TraceAbstraction... [2018-06-22 11:08:28,697 INFO ]: TraceAbstraction initialized [2018-06-22 11:08:28,698 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 11:08:28" (1/3) ... [2018-06-22 11:08:28,699 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@768c277a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 11:08:28, skipping insertion in model container [2018-06-22 11:08:28,699 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:08:28" (2/3) ... [2018-06-22 11:08:28,699 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@768c277a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 11:08:28, skipping insertion in model container [2018-06-22 11:08:28,699 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 11:08:28" (3/3) ... [2018-06-22 11:08:28,701 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 11:08:28,711 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 11:08:28,719 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 11:08:28,756 INFO ]: Using default assertion order modulation [2018-06-22 11:08:28,757 INFO ]: Interprodecural is true [2018-06-22 11:08:28,757 INFO ]: Hoare is false [2018-06-22 11:08:28,757 INFO ]: Compute interpolants for FPandBP [2018-06-22 11:08:28,757 INFO ]: Backedges is TWOTRACK [2018-06-22 11:08:28,757 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 11:08:28,757 INFO ]: Difference is false [2018-06-22 11:08:28,757 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 11:08:28,757 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 11:08:28,772 INFO ]: Start isEmpty. Operand 15 states. [2018-06-22 11:08:28,786 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 11:08:28,786 INFO ]: Found error trace [2018-06-22 11:08:28,787 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:08:28,787 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:08:28,793 INFO ]: Analyzing trace with hash -1409059775, now seen corresponding path program 1 times [2018-06-22 11:08:28,795 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:08:28,795 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:08:28,832 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:08:28,832 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:08:28,832 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:08:28,880 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:08:29,008 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 11:08:29,011 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 11:08:29,011 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 11:08:29,013 INFO ]: Interpolant automaton has 4 states [2018-06-22 11:08:29,024 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 11:08:29,024 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 11:08:29,026 INFO ]: Start difference. First operand 15 states. Second operand 4 states. [2018-06-22 11:08:29,180 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:08:29,180 INFO ]: Finished difference Result 15 states and 22 transitions. [2018-06-22 11:08:29,180 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 11:08:29,181 INFO ]: Start accepts. Automaton has 4 states. Word has length 9 [2018-06-22 11:08:29,182 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:08:29,189 INFO ]: With dead ends: 15 [2018-06-22 11:08:29,190 INFO ]: Without dead ends: 15 [2018-06-22 11:08:29,191 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 11:08:29,203 INFO ]: Start minimizeSevpa. Operand 15 states. [2018-06-22 11:08:29,227 INFO ]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-06-22 11:08:29,228 INFO ]: Start removeUnreachable. Operand 15 states. [2018-06-22 11:08:29,229 INFO ]: Finished removeUnreachable. Reduced from 15 states to 15 states and 22 transitions. [2018-06-22 11:08:29,230 INFO ]: Start accepts. Automaton has 15 states and 22 transitions. Word has length 9 [2018-06-22 11:08:29,231 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:08:29,231 INFO ]: Abstraction has 15 states and 22 transitions. [2018-06-22 11:08:29,231 INFO ]: Interpolant automaton has 4 states. [2018-06-22 11:08:29,231 INFO ]: Start isEmpty. Operand 15 states and 22 transitions. [2018-06-22 11:08:29,233 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-22 11:08:29,233 INFO ]: Found error trace [2018-06-22 11:08:29,233 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:08:29,233 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:08:29,233 INFO ]: Analyzing trace with hash 1397489035, now seen corresponding path program 1 times [2018-06-22 11:08:29,233 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:08:29,233 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:08:29,234 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:08:29,234 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:08:29,234 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:08:29,264 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:08:29,666 WARN ]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-06-22 11:08:29,723 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 11:08:29,723 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:08:29,723 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 11:08:29,741 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:08:29,801 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:08:29,810 INFO ]: Computing forward predicates... [2018-06-22 11:08:30,275 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 11:08:30,295 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:08:30,295 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2018-06-22 11:08:30,295 INFO ]: Interpolant automaton has 10 states [2018-06-22 11:08:30,296 INFO ]: Constructing interpolant automaton starting with 10 interpolants. [2018-06-22 11:08:30,296 INFO ]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2018-06-22 11:08:30,296 INFO ]: Start difference. First operand 15 states and 22 transitions. Second operand 10 states. [2018-06-22 11:08:31,420 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:08:31,420 INFO ]: Finished difference Result 27 states and 47 transitions. [2018-06-22 11:08:31,422 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-06-22 11:08:31,422 INFO ]: Start accepts. Automaton has 10 states. Word has length 13 [2018-06-22 11:08:31,423 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:08:31,423 INFO ]: With dead ends: 27 [2018-06-22 11:08:31,424 INFO ]: Without dead ends: 19 [2018-06-22 11:08:31,425 INFO ]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2018-06-22 11:08:31,425 INFO ]: Start minimizeSevpa. Operand 19 states. [2018-06-22 11:08:31,437 INFO ]: Finished minimizeSevpa. Reduced states from 19 to 17. [2018-06-22 11:08:31,439 INFO ]: Start removeUnreachable. Operand 17 states. [2018-06-22 11:08:31,440 INFO ]: Finished removeUnreachable. Reduced from 17 states to 17 states and 25 transitions. [2018-06-22 11:08:31,440 INFO ]: Start accepts. Automaton has 17 states and 25 transitions. Word has length 13 [2018-06-22 11:08:31,440 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:08:31,440 INFO ]: Abstraction has 17 states and 25 transitions. [2018-06-22 11:08:31,440 INFO ]: Interpolant automaton has 10 states. [2018-06-22 11:08:31,440 INFO ]: Start isEmpty. Operand 17 states and 25 transitions. [2018-06-22 11:08:31,441 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-22 11:08:31,441 INFO ]: Found error trace [2018-06-22 11:08:31,441 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:08:31,441 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:08:31,442 INFO ]: Analyzing trace with hash 1152238182, now seen corresponding path program 1 times [2018-06-22 11:08:31,442 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:08:31,442 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:08:31,443 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:08:31,443 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:08:31,443 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:08:31,479 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:08:31,624 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 11:08:31,624 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:08:31,624 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 11:08:31,638 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:08:31,668 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:08:31,671 INFO ]: Computing forward predicates... [2018-06-22 11:08:31,740 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 11:08:31,759 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:08:31,759 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2018-06-22 11:08:31,759 INFO ]: Interpolant automaton has 10 states [2018-06-22 11:08:31,759 INFO ]: Constructing interpolant automaton starting with 10 interpolants. [2018-06-22 11:08:31,759 INFO ]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2018-06-22 11:08:31,759 INFO ]: Start difference. First operand 17 states and 25 transitions. Second operand 10 states. [2018-06-22 11:08:32,284 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:08:32,285 INFO ]: Finished difference Result 27 states and 43 transitions. [2018-06-22 11:08:32,327 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-06-22 11:08:32,327 INFO ]: Start accepts. Automaton has 10 states. Word has length 13 [2018-06-22 11:08:32,327 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:08:32,328 INFO ]: With dead ends: 27 [2018-06-22 11:08:32,328 INFO ]: Without dead ends: 19 [2018-06-22 11:08:32,329 INFO ]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2018-06-22 11:08:32,329 INFO ]: Start minimizeSevpa. Operand 19 states. [2018-06-22 11:08:32,338 INFO ]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-06-22 11:08:32,338 INFO ]: Start removeUnreachable. Operand 19 states. [2018-06-22 11:08:32,339 INFO ]: Finished removeUnreachable. Reduced from 19 states to 19 states and 28 transitions. [2018-06-22 11:08:32,339 INFO ]: Start accepts. Automaton has 19 states and 28 transitions. Word has length 13 [2018-06-22 11:08:32,341 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:08:32,342 INFO ]: Abstraction has 19 states and 28 transitions. [2018-06-22 11:08:32,342 INFO ]: Interpolant automaton has 10 states. [2018-06-22 11:08:32,342 INFO ]: Start isEmpty. Operand 19 states and 28 transitions. [2018-06-22 11:08:32,343 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-22 11:08:32,343 INFO ]: Found error trace [2018-06-22 11:08:32,343 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:08:32,343 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:08:32,343 INFO ]: Analyzing trace with hash 1300014339, now seen corresponding path program 1 times [2018-06-22 11:08:32,343 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:08:32,343 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:08:32,344 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:08:32,344 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:08:32,344 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:08:32,363 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:08:32,461 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 11:08:32,461 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:08:32,461 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 11:08:32,468 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:08:32,495 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:08:32,497 INFO ]: Computing forward predicates... [2018-06-22 11:08:32,533 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 11:08:32,562 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:08:32,562 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2018-06-22 11:08:32,562 INFO ]: Interpolant automaton has 8 states [2018-06-22 11:08:32,563 INFO ]: Constructing interpolant automaton starting with 8 interpolants. [2018-06-22 11:08:32,563 INFO ]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2018-06-22 11:08:32,563 INFO ]: Start difference. First operand 19 states and 28 transitions. Second operand 8 states. [2018-06-22 11:08:32,623 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:08:32,623 INFO ]: Finished difference Result 21 states and 32 transitions. [2018-06-22 11:08:32,624 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-22 11:08:32,624 INFO ]: Start accepts. Automaton has 8 states. Word has length 13 [2018-06-22 11:08:32,624 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:08:32,625 INFO ]: With dead ends: 21 [2018-06-22 11:08:32,625 INFO ]: Without dead ends: 21 [2018-06-22 11:08:32,625 INFO ]: 0 DeclaredPredicates, 19 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2018-06-22 11:08:32,625 INFO ]: Start minimizeSevpa. Operand 21 states. [2018-06-22 11:08:32,633 INFO ]: Finished minimizeSevpa. Reduced states from 21 to 21. [2018-06-22 11:08:32,633 INFO ]: Start removeUnreachable. Operand 21 states. [2018-06-22 11:08:32,634 INFO ]: Finished removeUnreachable. Reduced from 21 states to 21 states and 32 transitions. [2018-06-22 11:08:32,634 INFO ]: Start accepts. Automaton has 21 states and 32 transitions. Word has length 13 [2018-06-22 11:08:32,634 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:08:32,634 INFO ]: Abstraction has 21 states and 32 transitions. [2018-06-22 11:08:32,634 INFO ]: Interpolant automaton has 8 states. [2018-06-22 11:08:32,634 INFO ]: Start isEmpty. Operand 21 states and 32 transitions. [2018-06-22 11:08:32,635 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-22 11:08:32,635 INFO ]: Found error trace [2018-06-22 11:08:32,635 INFO ]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:08:32,635 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:08:32,635 INFO ]: Analyzing trace with hash 1216393896, now seen corresponding path program 1 times [2018-06-22 11:08:32,635 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:08:32,635 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:08:32,636 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:08:32,636 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:08:32,636 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:08:32,655 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:08:32,779 INFO ]: Checked inductivity of 9 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 11:08:32,779 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:08:32,779 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 11:08:32,788 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:08:32,810 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:08:32,813 INFO ]: Computing forward predicates... [2018-06-22 11:08:33,069 INFO ]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 11:08:33,102 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:08:33,103 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2018-06-22 11:08:33,103 INFO ]: Interpolant automaton has 14 states [2018-06-22 11:08:33,103 INFO ]: Constructing interpolant automaton starting with 14 interpolants. [2018-06-22 11:08:33,103 INFO ]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2018-06-22 11:08:33,103 INFO ]: Start difference. First operand 21 states and 32 transitions. Second operand 14 states. [2018-06-22 11:08:33,605 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:08:33,605 INFO ]: Finished difference Result 25 states and 37 transitions. [2018-06-22 11:08:33,605 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-06-22 11:08:33,605 INFO ]: Start accepts. Automaton has 14 states. Word has length 17 [2018-06-22 11:08:33,605 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:08:33,606 INFO ]: With dead ends: 25 [2018-06-22 11:08:33,606 INFO ]: Without dead ends: 18 [2018-06-22 11:08:33,606 INFO ]: 0 DeclaredPredicates, 31 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2018-06-22 11:08:33,607 INFO ]: Start minimizeSevpa. Operand 18 states. [2018-06-22 11:08:33,610 INFO ]: Finished minimizeSevpa. Reduced states from 18 to 16. [2018-06-22 11:08:33,610 INFO ]: Start removeUnreachable. Operand 16 states. [2018-06-22 11:08:33,610 INFO ]: Finished removeUnreachable. Reduced from 16 states to 16 states and 20 transitions. [2018-06-22 11:08:33,610 INFO ]: Start accepts. Automaton has 16 states and 20 transitions. Word has length 17 [2018-06-22 11:08:33,610 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:08:33,610 INFO ]: Abstraction has 16 states and 20 transitions. [2018-06-22 11:08:33,611 INFO ]: Interpolant automaton has 14 states. [2018-06-22 11:08:33,611 INFO ]: Start isEmpty. Operand 16 states and 20 transitions. [2018-06-22 11:08:33,611 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-22 11:08:33,611 INFO ]: Found error trace [2018-06-22 11:08:33,611 INFO ]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:08:33,611 INFO ]: === Iteration 6 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:08:33,611 INFO ]: Analyzing trace with hash -21232563, now seen corresponding path program 1 times [2018-06-22 11:08:33,611 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:08:33,612 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:08:33,612 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:08:33,612 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:08:33,612 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:08:33,626 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:08:33,714 INFO ]: Checked inductivity of 9 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 11:08:33,714 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:08:33,714 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 11:08:33,722 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:08:33,753 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:08:33,756 INFO ]: Computing forward predicates... [2018-06-22 11:08:33,838 INFO ]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 11:08:33,857 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:08:33,858 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2018-06-22 11:08:33,858 INFO ]: Interpolant automaton has 14 states [2018-06-22 11:08:33,858 INFO ]: Constructing interpolant automaton starting with 14 interpolants. [2018-06-22 11:08:33,858 INFO ]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2018-06-22 11:08:33,858 INFO ]: Start difference. First operand 16 states and 20 transitions. Second operand 14 states. [2018-06-22 11:08:34,090 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:08:34,090 INFO ]: Finished difference Result 20 states and 25 transitions. [2018-06-22 11:08:34,090 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-06-22 11:08:34,090 INFO ]: Start accepts. Automaton has 14 states. Word has length 17 [2018-06-22 11:08:34,090 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:08:34,091 INFO ]: With dead ends: 20 [2018-06-22 11:08:34,091 INFO ]: Without dead ends: 15 [2018-06-22 11:08:34,091 INFO ]: 0 DeclaredPredicates, 30 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=70, Invalid=310, Unknown=0, NotChecked=0, Total=380 [2018-06-22 11:08:34,092 INFO ]: Start minimizeSevpa. Operand 15 states. [2018-06-22 11:08:34,094 INFO ]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-06-22 11:08:34,094 INFO ]: Start removeUnreachable. Operand 15 states. [2018-06-22 11:08:34,095 INFO ]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2018-06-22 11:08:34,095 INFO ]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 17 [2018-06-22 11:08:34,095 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:08:34,095 INFO ]: Abstraction has 15 states and 16 transitions. [2018-06-22 11:08:34,095 INFO ]: Interpolant automaton has 14 states. [2018-06-22 11:08:34,095 INFO ]: Start isEmpty. Operand 15 states and 16 transitions. [2018-06-22 11:08:34,095 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-22 11:08:34,096 INFO ]: Found error trace [2018-06-22 11:08:34,096 INFO ]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:08:34,096 INFO ]: === Iteration 7 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:08:34,096 INFO ]: Analyzing trace with hash -829829691, now seen corresponding path program 2 times [2018-06-22 11:08:34,096 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:08:34,096 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:08:34,097 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:08:34,097 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:08:34,097 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:08:34,129 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:08:34,264 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 11:08:34,264 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:08:34,264 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 11:08:34,274 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 11:08:34,335 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 11:08:34,335 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:08:34,338 INFO ]: Computing forward predicates... [2018-06-22 11:08:34,776 INFO ]: Checked inductivity of 10 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 11:08:34,795 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:08:34,795 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2018-06-22 11:08:34,795 INFO ]: Interpolant automaton has 13 states [2018-06-22 11:08:34,795 INFO ]: Constructing interpolant automaton starting with 13 interpolants. [2018-06-22 11:08:34,796 INFO ]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2018-06-22 11:08:34,796 INFO ]: Start difference. First operand 15 states and 16 transitions. Second operand 13 states. [2018-06-22 11:08:35,073 WARN ]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 34 [2018-06-22 11:08:35,108 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:08:35,108 INFO ]: Finished difference Result 13 states and 14 transitions. [2018-06-22 11:08:35,108 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-06-22 11:08:35,108 INFO ]: Start accepts. Automaton has 13 states. Word has length 17 [2018-06-22 11:08:35,109 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:08:35,109 INFO ]: With dead ends: 13 [2018-06-22 11:08:35,109 INFO ]: Without dead ends: 0 [2018-06-22 11:08:35,109 INFO ]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2018-06-22 11:08:35,109 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-22 11:08:35,109 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-22 11:08:35,109 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-22 11:08:35,109 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-22 11:08:35,109 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2018-06-22 11:08:35,109 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:08:35,109 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-22 11:08:35,109 INFO ]: Interpolant automaton has 13 states. [2018-06-22 11:08:35,109 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-22 11:08:35,110 INFO ]: Finished isEmpty. No accepting run. [2018-06-22 11:08:35,114 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 11:08:35 BoogieIcfgContainer [2018-06-22 11:08:35,114 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 11:08:35,115 INFO ]: Toolchain (without parser) took 6899.46 ms. Allocated memory was 304.1 MB in the beginning and 370.1 MB in the end (delta: 66.1 MB). Free memory was 258.5 MB in the beginning and 310.4 MB in the end (delta: -52.0 MB). Peak memory consumption was 14.1 MB. Max. memory is 3.6 GB. [2018-06-22 11:08:35,116 INFO ]: SmtParser took 0.08 ms. Allocated memory is still 304.1 MB. Free memory is still 268.6 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 11:08:35,116 INFO ]: ChcToBoogie took 66.24 ms. Allocated memory is still 304.1 MB. Free memory was 258.5 MB in the beginning and 256.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 11:08:35,117 INFO ]: Boogie Preprocessor took 43.70 ms. Allocated memory is still 304.1 MB. Free memory was 256.5 MB in the beginning and 254.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 11:08:35,117 INFO ]: RCFGBuilder took 351.89 ms. Allocated memory is still 304.1 MB. Free memory was 254.5 MB in the beginning and 246.5 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 3.6 GB. [2018-06-22 11:08:35,118 INFO ]: TraceAbstraction took 6420.43 ms. Allocated memory was 304.1 MB in the beginning and 370.1 MB in the end (delta: 66.1 MB). Free memory was 246.5 MB in the beginning and 310.4 MB in the end (delta: -63.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 3.6 GB. [2018-06-22 11:08:35,121 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 304.1 MB. Free memory is still 268.6 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 66.24 ms. Allocated memory is still 304.1 MB. Free memory was 258.5 MB in the beginning and 256.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 43.70 ms. Allocated memory is still 304.1 MB. Free memory was 256.5 MB in the beginning and 254.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 351.89 ms. Allocated memory is still 304.1 MB. Free memory was 254.5 MB in the beginning and 246.5 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 6420.43 ms. Allocated memory was 304.1 MB in the beginning and 370.1 MB in the end (delta: 66.1 MB). Free memory was 246.5 MB in the beginning and 310.4 MB in the end (delta: -63.9 MB). Peak memory consumption was 2.1 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, 15 locations, 1 error locations. SAFE Result, 6.3s OverallTime, 7 OverallIterations, 3 TraceHistogramMax, 2.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 106 SDtfs, 31 SDslu, 403 SDs, 0 SdLazy, 613 SolverSat, 72 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 157 GetRequests, 70 SyntacticMatches, 1 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 3.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred 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, 7 MinimizatonAttempts, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.5s InterpolantComputationTime, 189 NumberOfCodeBlocks, 189 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 176 ConstructedInterpolants, 2 QuantifiedInterpolants, 14664 SizeOfPredicates, 38 NumberOfNonLiveVariables, 852 ConjunctsInSsa, 132 ConjunctsInUnsatCore, 13 InterpolantComputations, 1 PerfectInterpolantSequences, 29/74 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/003b-horn.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_11-08-35-133.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/003b-horn.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_11-08-35-133.csv Received shutdown request...