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/vmt-chc-benchmarks/lustre/metros_4_e2_968_e7_860.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 19:23:35,745 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 19:23:35,747 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 19:23:35,757 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 19:23:35,757 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 19:23:35,758 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 19:23:35,761 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 19:23:35,763 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 19:23:35,765 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 19:23:35,765 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 19:23:35,766 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 19:23:35,766 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 19:23:35,767 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 19:23:35,768 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 19:23:35,769 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 19:23:35,769 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 19:23:35,771 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 19:23:35,773 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 19:23:35,774 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 19:23:35,775 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 19:23:35,776 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 19:23:35,779 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 19:23:35,779 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 19:23:35,779 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 19:23:35,780 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 19:23:35,781 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 19:23:35,782 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 19:23:35,782 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 19:23:35,783 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 19:23:35,784 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 19:23:35,784 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 19:23:35,785 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 19:23:35,785 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 19:23:35,786 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 19:23:35,786 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 19:23:35,787 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 19:23:35,803 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 19:23:35,803 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 19:23:35,804 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 19:23:35,804 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 19:23:35,805 INFO L131 SettingsManager]: Preferences of ChcToBoogie differ from their defaults: [2018-06-22 19:23:35,805 INFO L133 SettingsManager]: * Use one large procedure with gotos to replace tail recursive calls=false [2018-06-22 19:23:35,805 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 19:23:35,806 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 19:23:35,806 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 19:23:35,806 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 19:23:35,806 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 19:23:35,807 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 19:23:35,807 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 19:23:35,807 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 19:23:35,807 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 19:23:35,807 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 19:23:35,808 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 19:23:35,808 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 19:23:35,808 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 19:23:35,809 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 19:23:35,810 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 19:23:35,853 INFO ]: Repository-Root is: /tmp [2018-06-22 19:23:35,870 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 19:23:35,875 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 19:23:35,876 INFO ]: Initializing SmtParser... [2018-06-22 19:23:35,876 INFO ]: SmtParser initialized [2018-06-22 19:23:35,877 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/lustre/metros_4_e2_968_e7_860.smt2 [2018-06-22 19:23:35,879 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 19:23:35,969 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/metros_4_e2_968_e7_860.smt2 unknown [2018-06-22 19:23:36,403 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/metros_4_e2_968_e7_860.smt2 [2018-06-22 19:23:36,407 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 19:23:36,413 INFO ]: Walking toolchain with 4 elements. [2018-06-22 19:23:36,414 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 19:23:36,414 INFO ]: Initializing ChcToBoogie... [2018-06-22 19:23:36,414 INFO ]: ChcToBoogie initialized [2018-06-22 19:23:36,417 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 07:23:36" (1/1) ... [2018-06-22 19:23:36,487 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:23:36 Unit [2018-06-22 19:23:36,487 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 19:23:36,488 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 19:23:36,488 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 19:23:36,488 INFO ]: Boogie Preprocessor initialized [2018-06-22 19:23:36,517 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:23:36" (1/1) ... [2018-06-22 19:23:36,517 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:23:36" (1/1) ... [2018-06-22 19:23:36,530 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:23:36" (1/1) ... [2018-06-22 19:23:36,530 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:23:36" (1/1) ... [2018-06-22 19:23:36,545 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:23:36" (1/1) ... [2018-06-22 19:23:36,546 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:23:36" (1/1) ... [2018-06-22 19:23:36,548 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:23:36" (1/1) ... [2018-06-22 19:23:36,559 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 19:23:36,559 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 19:23:36,560 INFO ]: Initializing RCFGBuilder... [2018-06-22 19:23:36,560 INFO ]: RCFGBuilder initialized [2018-06-22 19:23:36,560 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:23:36" (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 19:23:36,583 INFO ]: Specification and implementation of procedure False given in one single declaration [2018-06-22 19:23:36,583 INFO ]: Found specification of procedure False [2018-06-22 19:23:36,583 INFO ]: Found implementation of procedure False [2018-06-22 19:23:36,583 INFO ]: Specification and implementation of procedure state given in one single declaration [2018-06-22 19:23:36,583 INFO ]: Found specification of procedure state [2018-06-22 19:23:36,583 INFO ]: Found implementation of procedure state [2018-06-22 19:23:36,583 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 19:23:36,583 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 19:23:36,584 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 19:23:37,012 INFO ]: Using library mode [2018-06-22 19:23:37,012 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 07:23:37 BoogieIcfgContainer [2018-06-22 19:23:37,013 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 19:23:37,016 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 19:23:37,016 INFO ]: Initializing TraceAbstraction... [2018-06-22 19:23:37,024 INFO ]: TraceAbstraction initialized [2018-06-22 19:23:37,024 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 07:23:36" (1/3) ... [2018-06-22 19:23:37,025 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c054d5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 07:23:37, skipping insertion in model container [2018-06-22 19:23:37,025 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:23:36" (2/3) ... [2018-06-22 19:23:37,025 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c054d5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 07:23:37, skipping insertion in model container [2018-06-22 19:23:37,025 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 07:23:37" (3/3) ... [2018-06-22 19:23:37,027 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 19:23:37,037 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 19:23:37,047 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 19:23:37,091 INFO ]: Using default assertion order modulation [2018-06-22 19:23:37,091 INFO ]: Interprodecural is true [2018-06-22 19:23:37,091 INFO ]: Hoare is false [2018-06-22 19:23:37,091 INFO ]: Compute interpolants for FPandBP [2018-06-22 19:23:37,091 INFO ]: Backedges is TWOTRACK [2018-06-22 19:23:37,091 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 19:23:37,092 INFO ]: Difference is false [2018-06-22 19:23:37,092 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 19:23:37,092 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 19:23:37,105 INFO ]: Start isEmpty. Operand 13 states. [2018-06-22 19:23:37,118 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 19:23:37,118 INFO ]: Found error trace [2018-06-22 19:23:37,119 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 19:23:37,119 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 19:23:37,125 INFO ]: Analyzing trace with hash -683425083, now seen corresponding path program 1 times [2018-06-22 19:23:37,127 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 19:23:37,127 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 19:23:37,164 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:23:37,164 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 19:23:37,164 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:23:37,259 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:23:37,451 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 19:23:37,453 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 19:23:37,453 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 19:23:37,455 INFO ]: Interpolant automaton has 4 states [2018-06-22 19:23:37,465 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 19:23:37,465 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 19:23:37,467 INFO ]: Start difference. First operand 13 states. Second operand 4 states. [2018-06-22 19:23:37,605 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 19:23:37,606 INFO ]: Finished difference Result 13 states and 14 transitions. [2018-06-22 19:23:37,606 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 19:23:37,607 INFO ]: Start accepts. Automaton has 4 states. Word has length 9 [2018-06-22 19:23:37,607 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 19:23:37,617 INFO ]: With dead ends: 13 [2018-06-22 19:23:37,617 INFO ]: Without dead ends: 13 [2018-06-22 19:23:37,618 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 19:23:37,631 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-22 19:23:37,665 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-22 19:23:37,667 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-22 19:23:37,667 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2018-06-22 19:23:37,668 INFO ]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 9 [2018-06-22 19:23:37,669 INFO ]: Finished accepts. word is rejected. [2018-06-22 19:23:37,670 INFO ]: Abstraction has 13 states and 14 transitions. [2018-06-22 19:23:37,670 INFO ]: Interpolant automaton has 4 states. [2018-06-22 19:23:37,670 INFO ]: Start isEmpty. Operand 13 states and 14 transitions. [2018-06-22 19:23:37,671 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-22 19:23:37,671 INFO ]: Found error trace [2018-06-22 19:23:37,671 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 19:23:37,671 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 19:23:37,672 INFO ]: Analyzing trace with hash 204343015, now seen corresponding path program 1 times [2018-06-22 19:23:37,672 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 19:23:37,672 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 19:23:37,673 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:23:37,673 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 19:23:37,673 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:23:37,787 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:23:38,178 WARN ]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2018-06-22 19:23:38,289 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 19:23:38,289 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 19:23:38,289 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 19:23:38,298 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 19:23:38,433 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:23:38,444 INFO ]: Computing forward predicates... [2018-06-22 19:23:38,786 WARN ]: Spent 209.00 ms on a formula simplification. DAG size of input: 9 DAG size of output: 7 [2018-06-22 19:23:38,984 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 19:23:39,005 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 19:23:39,005 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2018-06-22 19:23:39,006 INFO ]: Interpolant automaton has 9 states [2018-06-22 19:23:39,006 INFO ]: Constructing interpolant automaton starting with 9 interpolants. [2018-06-22 19:23:39,006 INFO ]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2018-06-22 19:23:39,006 INFO ]: Start difference. First operand 13 states and 14 transitions. Second operand 9 states. [2018-06-22 19:23:39,442 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 19:23:39,442 INFO ]: Finished difference Result 15 states and 16 transitions. [2018-06-22 19:23:39,443 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-22 19:23:39,443 INFO ]: Start accepts. Automaton has 9 states. Word has length 13 [2018-06-22 19:23:39,443 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 19:23:39,444 INFO ]: With dead ends: 15 [2018-06-22 19:23:39,444 INFO ]: Without dead ends: 15 [2018-06-22 19:23:39,445 INFO ]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2018-06-22 19:23:39,445 INFO ]: Start minimizeSevpa. Operand 15 states. [2018-06-22 19:23:39,447 INFO ]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-06-22 19:23:39,447 INFO ]: Start removeUnreachable. Operand 15 states. [2018-06-22 19:23:39,448 INFO ]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2018-06-22 19:23:39,448 INFO ]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 13 [2018-06-22 19:23:39,449 INFO ]: Finished accepts. word is rejected. [2018-06-22 19:23:39,449 INFO ]: Abstraction has 15 states and 16 transitions. [2018-06-22 19:23:39,449 INFO ]: Interpolant automaton has 9 states. [2018-06-22 19:23:39,450 INFO ]: Start isEmpty. Operand 15 states and 16 transitions. [2018-06-22 19:23:39,450 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-22 19:23:39,450 INFO ]: Found error trace [2018-06-22 19:23:39,450 INFO ]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 19:23:39,450 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 19:23:39,450 INFO ]: Analyzing trace with hash -1649658231, now seen corresponding path program 2 times [2018-06-22 19:23:39,450 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 19:23:39,450 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 19:23:39,451 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:23:39,451 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 19:23:39,451 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:23:39,556 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:23:39,873 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 19:23:39,873 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 19:23:39,873 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 19:23:39,887 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 19:23:40,023 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 19:23:40,023 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:23:40,028 INFO ]: Computing forward predicates... [2018-06-22 19:23:40,661 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 19:23:40,681 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 19:23:40,681 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2018-06-22 19:23:40,681 INFO ]: Interpolant automaton has 13 states [2018-06-22 19:23:40,681 INFO ]: Constructing interpolant automaton starting with 13 interpolants. [2018-06-22 19:23:40,681 INFO ]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2018-06-22 19:23:40,682 INFO ]: Start difference. First operand 15 states and 16 transitions. Second operand 13 states. [2018-06-22 19:23:40,992 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 19:23:40,992 INFO ]: Finished difference Result 17 states and 18 transitions. [2018-06-22 19:23:40,999 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-22 19:23:40,999 INFO ]: Start accepts. Automaton has 13 states. Word has length 17 [2018-06-22 19:23:40,999 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 19:23:41,000 INFO ]: With dead ends: 17 [2018-06-22 19:23:41,000 INFO ]: Without dead ends: 17 [2018-06-22 19:23:41,000 INFO ]: 0 DeclaredPredicates, 28 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2018-06-22 19:23:41,000 INFO ]: Start minimizeSevpa. Operand 17 states. [2018-06-22 19:23:41,003 INFO ]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-06-22 19:23:41,003 INFO ]: Start removeUnreachable. Operand 17 states. [2018-06-22 19:23:41,004 INFO ]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2018-06-22 19:23:41,004 INFO ]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 17 [2018-06-22 19:23:41,004 INFO ]: Finished accepts. word is rejected. [2018-06-22 19:23:41,004 INFO ]: Abstraction has 17 states and 18 transitions. [2018-06-22 19:23:41,004 INFO ]: Interpolant automaton has 13 states. [2018-06-22 19:23:41,004 INFO ]: Start isEmpty. Operand 17 states and 18 transitions. [2018-06-22 19:23:41,004 INFO ]: Finished isEmpty. Found accepting run of length 22 [2018-06-22 19:23:41,005 INFO ]: Found error trace [2018-06-22 19:23:41,005 INFO ]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 19:23:41,005 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 19:23:41,005 INFO ]: Analyzing trace with hash 2119922091, now seen corresponding path program 3 times [2018-06-22 19:23:41,005 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 19:23:41,005 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 19:23:41,006 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:23:41,006 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 19:23:41,006 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:23:41,164 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:23:41,559 WARN ]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2018-06-22 19:23:41,941 WARN ]: Spent 286.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 57 [2018-06-22 19:23:42,070 INFO ]: Checked inductivity of 21 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-06-22 19:23:42,070 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 19:23:42,153 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 19:23:42,162 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-22 19:23:42,309 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-06-22 19:23:42,309 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:23:42,315 INFO ]: Computing forward predicates... [2018-06-22 19:23:42,589 INFO ]: Checked inductivity of 21 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-06-22 19:23:42,624 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 19:23:42,624 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2018-06-22 19:23:42,624 INFO ]: Interpolant automaton has 17 states [2018-06-22 19:23:42,624 INFO ]: Constructing interpolant automaton starting with 17 interpolants. [2018-06-22 19:23:42,624 INFO ]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2018-06-22 19:23:42,625 INFO ]: Start difference. First operand 17 states and 18 transitions. Second operand 17 states. [2018-06-22 19:23:42,879 WARN ]: Spent 142.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 85 [2018-06-22 19:23:43,115 WARN ]: Spent 190.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 96 [2018-06-22 19:23:43,391 WARN ]: Spent 208.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 83 [2018-06-22 19:23:43,555 WARN ]: Spent 135.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 80 [2018-06-22 19:23:43,594 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 19:23:43,595 INFO ]: Finished difference Result 19 states and 20 transitions. [2018-06-22 19:23:43,596 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-06-22 19:23:43,596 INFO ]: Start accepts. Automaton has 17 states. Word has length 21 [2018-06-22 19:23:43,596 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 19:23:43,597 INFO ]: With dead ends: 19 [2018-06-22 19:23:43,597 INFO ]: Without dead ends: 19 [2018-06-22 19:23:43,597 INFO ]: 0 DeclaredPredicates, 35 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=97, Invalid=365, Unknown=0, NotChecked=0, Total=462 [2018-06-22 19:23:43,597 INFO ]: Start minimizeSevpa. Operand 19 states. [2018-06-22 19:23:43,600 INFO ]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-06-22 19:23:43,600 INFO ]: Start removeUnreachable. Operand 19 states. [2018-06-22 19:23:43,601 INFO ]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2018-06-22 19:23:43,601 INFO ]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 21 [2018-06-22 19:23:43,601 INFO ]: Finished accepts. word is rejected. [2018-06-22 19:23:43,601 INFO ]: Abstraction has 19 states and 20 transitions. [2018-06-22 19:23:43,601 INFO ]: Interpolant automaton has 17 states. [2018-06-22 19:23:43,601 INFO ]: Start isEmpty. Operand 19 states and 20 transitions. [2018-06-22 19:23:43,602 INFO ]: Finished isEmpty. Found accepting run of length 26 [2018-06-22 19:23:43,602 INFO ]: Found error trace [2018-06-22 19:23:43,602 INFO ]: trace histogram [5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 19:23:43,602 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 19:23:43,602 INFO ]: Analyzing trace with hash 1762711629, now seen corresponding path program 4 times [2018-06-22 19:23:43,602 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 19:23:43,602 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 19:23:43,603 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:23:43,603 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 19:23:43,603 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:23:43,891 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:23:44,322 WARN ]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2018-06-22 19:23:44,614 WARN ]: Spent 214.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 27 [2018-06-22 19:23:44,729 WARN ]: Spent 105.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 26 [2018-06-22 19:23:44,846 WARN ]: Spent 105.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 28 [2018-06-22 19:23:45,226 WARN ]: Spent 134.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 19 [2018-06-22 19:23:45,240 INFO ]: Checked inductivity of 36 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-06-22 19:23:45,240 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 19:23:45,240 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 19:23:45,250 INFO ]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-06-22 19:23:45,415 INFO ]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-06-22 19:23:45,415 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:23:45,422 INFO ]: Computing forward predicates... [2018-06-22 19:23:46,032 INFO ]: Checked inductivity of 36 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2018-06-22 19:23:46,053 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 19:23:46,053 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 20 [2018-06-22 19:23:46,053 INFO ]: Interpolant automaton has 20 states [2018-06-22 19:23:46,054 INFO ]: Constructing interpolant automaton starting with 20 interpolants. [2018-06-22 19:23:46,054 INFO ]: CoverageRelationStatistics Valid=46, Invalid=334, Unknown=0, NotChecked=0, Total=380 [2018-06-22 19:23:46,054 INFO ]: Start difference. First operand 19 states and 20 transitions. Second operand 20 states. [2018-06-22 19:23:46,294 WARN ]: Spent 123.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 61 [2018-06-22 19:23:46,507 WARN ]: Spent 167.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 71 [2018-06-22 19:23:46,726 WARN ]: Spent 124.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2018-06-22 19:23:46,910 WARN ]: Spent 142.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 64 [2018-06-22 19:23:47,061 WARN ]: Spent 120.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2018-06-22 19:23:47,102 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 19:23:47,102 INFO ]: Finished difference Result 21 states and 22 transitions. [2018-06-22 19:23:47,122 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-06-22 19:23:47,122 INFO ]: Start accepts. Automaton has 20 states. Word has length 25 [2018-06-22 19:23:47,122 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 19:23:47,123 INFO ]: With dead ends: 21 [2018-06-22 19:23:47,123 INFO ]: Without dead ends: 21 [2018-06-22 19:23:47,123 INFO ]: 0 DeclaredPredicates, 42 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=132, Invalid=518, Unknown=0, NotChecked=0, Total=650 [2018-06-22 19:23:47,124 INFO ]: Start minimizeSevpa. Operand 21 states. [2018-06-22 19:23:47,126 INFO ]: Finished minimizeSevpa. Reduced states from 21 to 21. [2018-06-22 19:23:47,126 INFO ]: Start removeUnreachable. Operand 21 states. [2018-06-22 19:23:47,127 INFO ]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2018-06-22 19:23:47,127 INFO ]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 25 [2018-06-22 19:23:47,127 INFO ]: Finished accepts. word is rejected. [2018-06-22 19:23:47,127 INFO ]: Abstraction has 21 states and 22 transitions. [2018-06-22 19:23:47,127 INFO ]: Interpolant automaton has 20 states. [2018-06-22 19:23:47,127 INFO ]: Start isEmpty. Operand 21 states and 22 transitions. [2018-06-22 19:23:47,128 INFO ]: Finished isEmpty. Found accepting run of length 30 [2018-06-22 19:23:47,128 INFO ]: Found error trace [2018-06-22 19:23:47,128 INFO ]: trace histogram [6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 19:23:47,128 INFO ]: === Iteration 6 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 19:23:47,128 INFO ]: Analyzing trace with hash 853117551, now seen corresponding path program 5 times [2018-06-22 19:23:47,128 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 19:23:47,128 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 19:23:47,129 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:23:47,129 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 19:23:47,129 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:23:47,412 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:23:48,058 WARN ]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2018-06-22 19:23:49,698 WARN ]: Spent 1.54 s on a formula simplification. DAG size of input: 227 DAG size of output: 39 [2018-06-22 19:23:49,939 WARN ]: Spent 216.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 21 [2018-06-22 19:23:50,354 WARN ]: Spent 372.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 28 [2018-06-22 19:23:50,565 WARN ]: Spent 146.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 25 [2018-06-22 19:23:50,767 WARN ]: Spent 114.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 23 [2018-06-22 19:23:51,528 WARN ]: Spent 490.00 ms on a formula simplification. DAG size of input: 252 DAG size of output: 27 [2018-06-22 19:23:52,272 WARN ]: Spent 627.00 ms on a formula simplification. DAG size of input: 227 DAG size of output: 20 [2018-06-22 19:23:52,891 WARN ]: Spent 518.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 10 [2018-06-22 19:23:52,910 INFO ]: Checked inductivity of 55 backedges. 1 proven. 39 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-06-22 19:23:52,910 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 19:23:52,910 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 19:23:52,920 INFO ]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-06-22 19:23:53,142 INFO ]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2018-06-22 19:23:53,142 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:23:53,151 INFO ]: Computing forward predicates... [2018-06-22 19:23:53,517 INFO ]: Checked inductivity of 55 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2018-06-22 19:23:53,537 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 19:23:53,538 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 24 [2018-06-22 19:23:53,538 INFO ]: Interpolant automaton has 24 states [2018-06-22 19:23:53,538 INFO ]: Constructing interpolant automaton starting with 24 interpolants. [2018-06-22 19:23:53,538 INFO ]: CoverageRelationStatistics Valid=56, Invalid=496, Unknown=0, NotChecked=0, Total=552 [2018-06-22 19:23:53,538 INFO ]: Start difference. First operand 21 states and 22 transitions. Second operand 24 states. [2018-06-22 19:23:53,757 WARN ]: Spent 150.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 85 [2018-06-22 19:23:53,986 WARN ]: Spent 178.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 89 [2018-06-22 19:23:54,319 WARN ]: Spent 185.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 92 [2018-06-22 19:23:54,801 WARN ]: Spent 336.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 84 [2018-06-22 19:23:55,010 WARN ]: Spent 147.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 79 [2018-06-22 19:23:55,192 WARN ]: Spent 143.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 75 [2018-06-22 19:23:55,367 WARN ]: Spent 137.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 75 [2018-06-22 19:23:55,412 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 19:23:55,412 INFO ]: Finished difference Result 25 states and 26 transitions. [2018-06-22 19:23:55,418 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-06-22 19:23:55,418 INFO ]: Start accepts. Automaton has 24 states. Word has length 29 [2018-06-22 19:23:55,418 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 19:23:55,418 INFO ]: With dead ends: 25 [2018-06-22 19:23:55,418 INFO ]: Without dead ends: 25 [2018-06-22 19:23:55,419 INFO ]: 0 DeclaredPredicates, 50 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=198, Invalid=794, Unknown=0, NotChecked=0, Total=992 [2018-06-22 19:23:55,419 INFO ]: Start minimizeSevpa. Operand 25 states. [2018-06-22 19:23:55,423 INFO ]: Finished minimizeSevpa. Reduced states from 25 to 25. [2018-06-22 19:23:55,423 INFO ]: Start removeUnreachable. Operand 25 states. [2018-06-22 19:23:55,423 INFO ]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2018-06-22 19:23:55,423 INFO ]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 29 [2018-06-22 19:23:55,424 INFO ]: Finished accepts. word is rejected. [2018-06-22 19:23:55,424 INFO ]: Abstraction has 25 states and 26 transitions. [2018-06-22 19:23:55,424 INFO ]: Interpolant automaton has 24 states. [2018-06-22 19:23:55,424 INFO ]: Start isEmpty. Operand 25 states and 26 transitions. [2018-06-22 19:23:55,425 INFO ]: Finished isEmpty. Found accepting run of length 38 [2018-06-22 19:23:55,425 INFO ]: Found error trace [2018-06-22 19:23:55,425 INFO ]: trace histogram [8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 19:23:55,425 INFO ]: === Iteration 7 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 19:23:55,425 INFO ]: Analyzing trace with hash -1494134477, now seen corresponding path program 6 times [2018-06-22 19:23:55,425 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 19:23:55,425 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 19:23:55,425 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:23:55,425 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 19:23:55,425 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:23:56,185 INFO ]: Conjunction of SSA is unsat Received shutdown request... [2018-06-22 19:24:41,186 WARN ]: Removed 2 from assertion stack [2018-06-22 19:24:41,186 WARN ]: Verification canceled [2018-06-22 19:24:41,189 WARN ]: Timeout [2018-06-22 19:24:41,190 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 07:24:41 BoogieIcfgContainer [2018-06-22 19:24:41,190 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 19:24:41,191 INFO ]: Toolchain (without parser) took 64782.51 ms. Allocated memory was 306.7 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 246.1 MB in the beginning and 219.3 MB in the end (delta: 26.8 MB). Peak memory consumption was 1.3 GB. Max. memory is 3.6 GB. [2018-06-22 19:24:41,191 INFO ]: SmtParser took 0.07 ms. Allocated memory is still 306.7 MB. Free memory is still 270.2 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 19:24:41,191 INFO ]: ChcToBoogie took 73.90 ms. Allocated memory is still 306.7 MB. Free memory was 246.1 MB in the beginning and 244.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 19:24:41,192 INFO ]: Boogie Preprocessor took 71.07 ms. Allocated memory is still 306.7 MB. Free memory was 244.1 MB in the beginning and 242.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 19:24:41,192 INFO ]: RCFGBuilder took 453.08 ms. Allocated memory is still 306.7 MB. Free memory was 242.1 MB in the beginning and 218.1 MB in the end (delta: 24.0 MB). Peak memory consumption was 24.0 MB. Max. memory is 3.6 GB. [2018-06-22 19:24:41,193 INFO ]: TraceAbstraction took 64173.24 ms. Allocated memory was 306.7 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 218.1 MB in the beginning and 219.5 MB in the end (delta: -1.4 MB). Peak memory consumption was 1.3 GB. Max. memory is 3.6 GB. [2018-06-22 19:24:41,195 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 306.7 MB. Free memory is still 270.2 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 73.90 ms. Allocated memory is still 306.7 MB. Free memory was 246.1 MB in the beginning and 244.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 71.07 ms. Allocated memory is still 306.7 MB. Free memory was 244.1 MB in the beginning and 242.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 453.08 ms. Allocated memory is still 306.7 MB. Free memory was 242.1 MB in the beginning and 218.1 MB in the end (delta: 24.0 MB). Peak memory consumption was 24.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 64173.24 ms. Allocated memory was 306.7 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 218.1 MB in the beginning and 219.5 MB in the end (delta: -1.4 MB). Peak memory consumption was 1.3 GB. Max. memory is 3.6 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [UNKNOWN] : Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 0). Cancelled while BasicCegarLoop was analyzing trace of length 38 with TraceHistMax 8, while InterpolatingTraceCheckCraig was constructing Craig interpolants, while PredicateUnifier was unifying predicates, while SimplifyDDAWithTimeout was simplifying term of DAG size 2480. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 13 locations, 1 error locations. TIMEOUT Result, 64.1s OverallTime, 7 OverallIterations, 8 TraceHistogramMax, 4.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 65 SDtfs, 138 SDslu, 421 SDs, 0 SdLazy, 327 SolverSat, 179 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 179 GetRequests, 77 SyntacticMatches, 2 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 12.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25occurred in iteration=6, 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, 6 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 1.5s SatisfiabilityAnalysisTime, 11.2s InterpolantComputationTime, 219 NumberOfCodeBlocks, 219 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 208 ConstructedInterpolants, 0 QuantifiedInterpolants, 42476 SizeOfPredicates, 138 NumberOfNonLiveVariables, 4435 ConjunctsInSsa, 180 ConjunctsInUnsatCore, 11 InterpolantComputations, 1 PerfectInterpolantSequences, 73/250 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/metros_4_e2_968_e7_860.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_19-24-41-205.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/metros_4_e2_968_e7_860.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_19-24-41-205.csv Completed graceful shutdown